Relevant bibliographies by topics / Silicone damper

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Silicone damper'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Silicone damper.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Silicone damper"

1

FUJITA, TOYOHISA, YASUHISA WADA, GORO OBINATA, YOICHI AKAGAMI, SHINZO NISHIMURA, and YUJI OGASAWARA. "COMPARISON OF FREQUENCY CHARACTERISTICS IN A DAMPER USING MAGNETIC FLUID, ER FLUID DISPERSING SMECTITE, AND MIXED ER MAGNETIC FLUID." International Journal of Modern Physics B 10, no. 23n24 (October 30, 1996): 3001–10. http://dx.doi.org/10.1142/s0217979296001446.

Full text
Abstract:
This paper presents a new type of damper using electro-rheological (ER) magnetic fluid for improving magnetic fluid damper and ER fluid damper. Silicone oil based magnetic fluid dispersing 10 nm size of magnetite, silicone oil based ER fluid dispersing 2 nm to 50 nm size of smectite and a mixture, that is, ER magnetic fluid have been used in a piston type damper. Dynamic visco-elasticities of these fluids have been measured by considering chain (cluster) formations. Next, frequency characteristics of transmissibility (magnification factor) and phase in damper have been compared with those fluids under magnetic field, electric field and both fields. The Voigt or Maxwell model can be applied in those dampers depending on amplitude. ER magnetic fluid has showed the decrease of amplitude ratios at resonance point and higher frequency at any amplitude under both magnetic and electric fields as low-pass filter.
APA, Harvard, Vancouver, ISO, and other styles
2

Jiao, Sujuan, Jiajin Tian, Hui Zheng, and Hongxing Hua. "Modeling of a hydraulic damper with shear thinning fluid for damping mechanism analysis." Journal of Vibration and Control 23, no. 20 (February 8, 2016): 3365–76. http://dx.doi.org/10.1177/1077546316629264.

Full text
Abstract:
This paper presents an analytical model for computing the force-displacement loops of the passive hydraulic dampers filled with shear thinning fluid when the damper is subjected to a sinusoidal excitation. The analytical model is developed on the basis of Navier-Stokes equations by considering the rheological behavior of silicone oil. The obtained computational results agree well with those by experimental measurements, and both of them suggests that viscous friction, fluid compressibility, and friction loss are the three major damping mechanisms of a hydraulic damper with shear thinning fluid. The damper in a low-frequency and large-amplitude vibration may have bigger viscous damping coefficient than that when it is in a high-frequency and small-amplitude vibration, which suggests that a hydraulic damper filled with shear thinning fluid can satisfy the requirement of the isolation system better.
APA, Harvard, Vancouver, ISO, and other styles
3

Wang, Jian Xiao, and Shi Wang Wang. "Experiments on the Vibration Control of Flexible Rotor Using Shear Mode MR Elastomer Damper." Applied Mechanics and Materials 215-216 (November 2012): 741–45. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.741.

Full text
Abstract:
A shear mode magnetorheological (MR) elastomer damper is designed and manufactured, in which the MR elastomer is made by mixing RTV silicone, carbonyl iron particles and silicone oil, and solidifying under magnetic field. A flexible cantilever rotor system with single disk is constructed, and the controllability, effectiveness and stability of vibration control for the imbalance response of the rotor system using the MR damper are experimentally studied. From the test, it is found that as the strength of applied magnetic field increases, the damping and stiffness of the damper are increased; the critical speeds of the rotor system supported on the MR damper is increased distinctly, and the vibration at two critical speeds are restrained; the on-off control method may be used to control the rotor vibration while passing through the two critical speeds. The study shows that the shear mode MR elastomer damper is suitable for active vibration control of flexible rotor.
APA, Harvard, Vancouver, ISO, and other styles
4

Guo, Qiang, Yan Bei Chen, Xiang Liang Ning, and Lu Tang. "Speedy Design Method for Fluid Viscous Dampers Based on Numerical Simulation by CFD." Advanced Materials Research 446-449 (January 2012): 3869–74. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3869.

Full text
Abstract:
Bi-directional-cylinder viscous fluid dampers are studied numerically. Based on the power-law characteristic of silicone oil，the flow pattern of silicone oil is analyzed, the non-Newtonian fluid power-law model’s influence on the energy dissipation characteristic and the damping resistance of viscous dampers is discussed, and the calculation formulas are presented. The damping force of the viscous damper samples is simulated by professional CFD software based on the dynamic mesh model, Based on comprehensive analysis of the results, the experiential design method of large-tonnage-damping-force viscous fluid dampers is finally established. On the other hand, the numerical simulation curves are in good agreement with experimental curves, which validates the feasibility of numerical method in the preliminary design of bi-directional-cylinder viscous fluid dampers. The numerical method helps to enhance the engineering precision, guide the design, and shorten the development cycle.
APA, Harvard, Vancouver, ISO, and other styles
5

Sun, Jingya, Sujuan Jiao, Xiuchang Huang, and Hongxing Hua. "Investigation into the Impact and Buffering Characteristics of a Non-Newtonian Fluid Damper: Experiment and Simulation." Shock and Vibration 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/170464.

Full text
Abstract:
Dampers are widely applied to protect devices or human body from severe impact or harmful vibration circumstances. Considering that dampers with low velocity exponent have advantages in energy absorption, they have been widely used in antiseismic structures and shock buffering. Non-Newtonian fluid with strong shear-thinning effect is commonly adopted to achieve this goal. To obtain the damping mechanism and find convenient methods to design the nonlinear fluid damper, in this study, a hydraulic damper is filled with 500,000 cSt silicone oil to achieve a low velocity exponent. Drop hammer test is carried out to experimentally obtain its impact and buffering characteristics. Then a coupling model is built to analyze its damping mechanism, which consists of a model of impact system and a computational fluid dynamics (CFD) model. Results from the coupling model can be consistent with the experiment results. Simulation method can help design non-Newtonian fluid dampers more effectively.
APA, Harvard, Vancouver, ISO, and other styles
6

Dziurdź, Jacek, and Radosław Pakowski. "Analysis of Action Viscous Torsional Vibration Damper of the Crankshaft Based on Transverse Vibration the Engine Block." Solid State Phenomena 236 (July 2015): 145–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.236.145.

Full text
Abstract:
The article presents an example of research results of the mechanical vibrations of the internal combustion engine with a viscous torsional vibration damper of the crankshaft for different values of the viscosity of silicone oil. A comparison of the crankshaft torsional vibration and the transverse vibration motor body was made. There was proposed the use of the information contained in the transverse vibration signals in order to determine the changes in the technical condition of the viscous damper (changes in viscosity of silicone oil fillingthe damper). Accepting the argument which assumes that there exists the coupling vibration and torsional shaft bent in transverse vibration signals, there should appear symptoms associated with changes in the torsional vibrations. In order to prove this thesis there was conducted active research experiment. Measurements of transients during engine acceleration were made. There was presented the example of the results of measurements of the crankshaft torsional vibrationand the transverse vibration of the motor body.
APA, Harvard, Vancouver, ISO, and other styles
7

Venczel, Márk, and Árpád Veress. "Introduction to Design and Analysis of Torsional Vibration Dampers in Vehicle Industry." International Journal of Engineering and Management Sciences 4, no. 1 (March 3, 2019): 310–24. http://dx.doi.org/10.21791/ijems.2019.1.39.

Full text
Abstract:
The crankshaft of today’s internal combustion engines with high performance output are exposed to harmful torsional oscillations originated from the unbalanced gas and inertial forces. To avoid the fatigue damage of engine components, caused by the undesired vibrations, torsional vibration dampers can be applied. Viscodampers are one type of the torsional vibration dampers, which operational fluid is silicone oil. For cost-effective R&D activities and production, finite element and finite volume numerical discretization methods based calculation techniques must be involved into the engineering work supported by the modern computer technology. The aim of this paper is to provide an insight into the multidisciplinary design and development process of visco-dampers in vehicle industry applications. Four different examples as structural, fatigue, CFD analyses and structural optimization have been introduced in the present work. It turned out from the static structural and fatigue analyses, that the investigated damper has safety factor over the limit for both static structural and fatigue analyses, so it is suitable for the given load conditions. In the structural optimization process 34.36% mass reduction has been achieved. According to the coupled fluid dynamic and heat transfer simulations a rather stagnating air zone evolved between the engine and the damper during the operation, which can cause efficiency reduction of cooling fins mounted onto the housing. In light of the numerical results, the suitable damper position has been determined for the highest heat transfer.
APA, Harvard, Vancouver, ISO, and other styles
8

Jin, Huichao, Tao Zhang, Wei Bing, Shiyun Dong, and Limei Tian. "Antifouling performance and mechanism of elastic graphene–silicone rubber composite membranes." Journal of Materials Chemistry B 7, no. 3 (2019): 488–97. http://dx.doi.org/10.1039/c8tb02648c.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Bratu, Polidor. "Modification of the Dual Kelvin-Voigt/Maxwell Rheological Behavior for Antiseismic Hydraulic Dampers." Applied Mechanics and Materials 430 (September 2013): 312–16. http://dx.doi.org/10.4028/www.scientific.net/amm.430.312.

Full text
Abstract:
The dissipative function is presented, depending on stiffness and maximum displacement, for a hydraulic damper with silicone oil at an exterior excitation type shock, applied in the time domain. For the same constructive solution, silicone hydraulic oil, the same structural mechanic elements, but with different settings/adjustments, one can model the rheological system Kelvin-Voigt, as well as the Maxwell system. In this context, the main behavioral differences in dynamic response will be presented, as well as the stiffness, dissipation and displacement during the applied shock parameters.
APA, Harvard, Vancouver, ISO, and other styles
10

OKAMURA, Hiroshi. "Prediction Technique for the Viscous Damper Property by High-Viscous Silicone Oil Studied. Study of the Optimum Design for Damper with the Identification of Silicone Oil Dynamic Property." Transactions of the Japan Society of Mechanical Engineers Series C 65, no. 631 (1999): 873–80. http://dx.doi.org/10.1299/kikaic.65.873.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Silicone damper"

1

Kovář, Lukáš. "Silikonový tlumič torzních kmitů šestiválcového vznětového motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318694.

Full text
Abstract:
The aim of this thesis is to design crankshaft for in-line six-cylinder diesel engine and to design viscous torsional vibration damper for the cranktrain of specified parameters. The thesis includes the creation of a dynamic torsional model of cranktrain and calculation of forced vibrations of mechanism with and without damper. Part of this thesis is also strength analysis of the designed crankshaft with damper using the Finite Element Method (FEM).
APA, Harvard, Vancouver, ISO, and other styles
2

Drozdek, Lukáš. "Silikonový tlumič torzních kmitů řadového šestiválcového vznětového motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228281.

Full text
Abstract:
This thesis "Silicone damper of a six-cylinder in-line diesel engine " is focused on the proposal of alternative using of silicone damper for the a six-cylinder in-line diesel engine, which is made for tractors and other industrial aplications. The aim of this thesis is to count the oscilation of crankshaft by the help of appropriate dynamic model, then to propose such a basic parameters of silicone damper, which absorbes torsion blip crankshaft to acceptable value. The next part of my thesis is proposal of the constructive implementation of fixation the silicone damper on the free part of crankshaft. The last part of my thesis is comparing and evaluating the oscilation of crankshaft without a dumper and with a new propsal of the silicone damper.
APA, Harvard, Vancouver, ISO, and other styles
3

Trojan, Jan. "Pohřební služba a kamenictví." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227457.

Full text
Abstract:
A new building stand two single-storey buildings which will be used for the production, housing, sale and storage of the deceased. Objects have rectangular shapes with external dimensions of 9.9 x 24,25 m and 21.0 x 42.85 m. The structures are designed as a vertical system POROTHERM, SPIROLL ceiling and roofing flat roof. The facade will be dealt with silicate plaster rubbing.
APA, Harvard, Vancouver, ISO, and other styles
4

盧思源. "Properties of Fluid Dampers filled with Silicone Glue." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/28290437103023360171.

Full text
Abstract:
碩士
國立成功大學
土木工程學系
88
Series of tests are performed by silicone glue with different viscosities to deduce the dynamic properties of the fluid damper. Damping effects due to the factors of temperature change, various piston shape, and various cross sections are also investigated. According to test data, several conclusions can be made. 1.The damping effect of fluid damper filled with silicone glue is higher than that filled with R68 oil. 2.Temperature effect of fluid damper filled with silicone glue is more seriously than that filled with R68 oil. 3.Viscosity plays an important role. For higher viscosity, the higher damping factor obtained. 4.The fluid damper with thicker piston gets higher damping force than that with thinner piston. In case of vibration with larger displacement, the damping force obtained for fluid damper with I-shape piston is higher than that with plane-shape piston. Key word: structure control, fluid damper, energy dissipation, seismic design.
APA, Harvard, Vancouver, ISO, and other styles
5

Lin, Yung-Hsiang, and 林詠翔. "A Preliminary Study on the Effects of Silicone Oil Mixing on the Behavior of Viscous Fluid Dampers." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/51070471765730660877.

Full text
Abstract:
碩士
國立暨南國際大學
土木工程學系
99
The engineer’s purpose of installed the liquid viscosity dampers in the structures is energy dissipation, they prefer to use the liquid resistor which has smaller speed-index n, the reason is that when small earthquakes comes, it can produce output power to control structural’s vibration, but when the bigger earthquake comes, output power will not be too large to destroy structural. There are three methods to reduce n value of gap damper: high-speed, small gap and thick silicone oil, but using these methods will also have other adverse side effects. In this study, we excluded these three methods, but we started from the silicone oil. Through literature we can know that mixed silicone oil is more easily to become thinning, therefore, we use mixed silicone oil to experiments. Each groups are mixed by five kind of pure silicone oil, and each group’s viscosity is 1000 cps, finally, we analysis and comparison the test data of the damper. The result is that mixed silicone oil can reduce n value and about 0.1 lower than the pure Silicone oil of the damper.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Silicone damper"

1

Zhai, Liming, Enzhen Wang, Weiguo Xu, Chenghai Huang, and Zhenguo Yang. "Impact Analysis of the Aging Silicone Oil in the Damper on the Torsional Vibration of the Crankshaft of the Heavy-Duty Vehicle Diesel Engine." In Lecture Notes in Electrical Engineering, 623–33. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7945-5_44.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Yang, Weixin, Ping Wang, and Jinshun Wang. "Effect of air bubbles in the viscous damper silicone oil on damping property." In Power Engineering, 13–16. CRC Press, 2016. http://dx.doi.org/10.1201/9781315386829-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bose, Goutam Kumar, Pritam Ghosh, and Debashis Pal. "Analytical and Numerical Modelling of Liquid Penetration in a Closed Capillary." In Process Analysis, Design, and Intensification in Microfluidics and Chemical Engineering, 114–35. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7138-4.ch004.

Full text
Abstract:
The chapter explores the dynamics of liquid penetration in a closed end vertical capillary. This model is very important for impedance spectroscopy methodology where oxidized porous silicon provides an in vitro medium, and one important criteria of this methodology is the liquid penetration depth inside the silicon pores as the impedance is greatly affected by this penetration depth. This problem is also important in order to understand how the presence of entrapped air inside a micro pore can influence the dynamics of capillary flow. For this purpose, the model is studied both analytically and numerically. In this study, different pore size (500 nm and 2 µm diameter) with equal pore depth (~10 µm) have been used. Finally, the analytical solution is compared with the numerical results. In addition, the linearization of the system is also investigated and found the critical viscosity of which demarcates the over-damped and under-damped regimes. Further, this study is extended by incorporating the dynamic contact angle effects on the meniscus dynamics.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Silicone damper"

1

Easton, Myriam P., Aura C. Labatete-Goeppinger, Jesse D. Fowler, and De-Ling Liu. "Identification of collected volatile condensable material (CVCM) from ASTM E595 of silicone damper fluid." In SPIE Optical Engineering + Applications, edited by Nancy Carosso and Joanne Egges. SPIE, 2014. http://dx.doi.org/10.1117/12.2063980.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Arelekatti, V. N. Murthy, Nina T. Petelina, W. Brett Johnson, Amos G. Winter, and Matthew J. Major. "Design of a Passive, Shear-Based Rotary Hydraulic Damper for Single-Axis Prosthetic Knees." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85962.

Full text
Abstract:
With over 30 million people worldwide in need of assistive devices, there is a great need for low-cost, high performance prosthetic technologies in the developing world. A majority of the hydraulic dampers used in prosthetic knee designs are highly specialized, expensive, require regular maintenance, and are incompatible for use with low-cost, single-axis prosthetic knees popular in developing countries. In this study, optimal damping coefficients were computed based on a theoretical analysis of gait, specifically during the transition from the stance to swing phase of human walking when a large damping torque is needed at the knee. A novel rotary hydraulic damper prototype was designed using high-viscosity silicone oil and a concentric meshing of fins for shearing the oil. The prototype was validated experimentally to provide the desired damping torque profile. For preliminary, user-centric validation of the prototype, a gait study on one above-knee amputee in India was conducted with four different damping magnitudes. Feedback from the subject validated the optimal damping torque magnitude predicted for minimizing gait deviations and for enabling able-bodied knee kinematics. The new rotary hydraulic damper design is novel, passive, and compatible with low-cost, single-axis knee prostheses.
APA, Harvard, Vancouver, ISO, and other styles
3

Liu, Gaoyu, Fei Gao, and Wei-Hsin Liao. "Magnetorheological Damper With Micro-Grooves: Design and Experiment." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2307.

Full text
Abstract:
Abstract Due to low power consumption and fast response, magnetorheological (MR) dampers are widely used in various engineering applications. To enhance the performances, efforts have been made to increase the field dependent force with the same power consumption. However, the fluid viscous force is also increased significantly, which is undesirable in practical use. To tackle this problem, the focus of this paper is to design and test a new MR damper with micro-grooves for performance enhancement. First, the detailed design of the proposed MR damper is provided. A prototype of the new MR damper is fabricated. Silicon steel circular rings with thickness of 0.25 mm are installed around the damper piston to form two-layer micro-grooves. Experimental results of the two MR dampers without and with micro-grooves are then compared. The advantages of MR damper with micro-grooves over the one without micro-grooves are validated. The damping force and controllable force range of MR damper with micro-grooves are larger than the one without micro-grooves. When designing MR damper, making micro-grooves can also decrease the increment of fluid viscous force while keeping the same increase of field dependent force. With micro-grooves, the field dependent force is increased by 92.7% with the same power consumption, while the fluid viscous force is increased by 43%.
APA, Harvard, Vancouver, ISO, and other styles
4

Gallo, Valentina, G. Ambrosi, R. Asfandiyarov, P. Azzarello, P. Bernardini, Bruna Bertucci, A. Bolognini, et al. "The DAMPE silicon tungsten tracker." In The 25th International workshop on vertex detectors. Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.287.0010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Wu, Xin. "The Silicon-Tungsten Tracker of the DAMPE Mission." In The 34th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.236.1192.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Gallo, Valentina, Giovanni Ambrosi, Ruslan Asfandiyarov, Philipp Azzarello, Paolo Bernardini, Bruna Bertucci, Alessio Bolognini, et al. "The test results of the Silicon Tungsten Tracker of DAMPE." In The 34th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.236.1199.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Vitillo, Stefania, and Valentina Gallo. "Measurement of cosmic-ray charge with the DAMPE Silicon-Tungsten Tracker." In 35th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.301.0240.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Zakaria, Rosnah, and Azizah Hanom Ahmad. "Rheology behaviour of modified silicone-dammar as a natural resin coating." In ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2015): 4th National Conference on Advanced Materials and Radiation Physics. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4928839.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wu, Xin. "In-orbit Performance of the Silicon-Tungsten Tracker of the DAMPE Mission." In 35th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2018. http://dx.doi.org/10.22323/1.301.0926.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hou, Quan-Wen, and Hai-Dong Wang. "Mass Nature of Heat and Its Applications III: Thermomass Model Based Damped Wave in Dielectrics." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22359.

Full text
Abstract:
The character of wave model for heat conduction is studied by numerical simulation of heat conduction in silicon heated by laser pulse. Based on the damping of the temperature peak, the penetration depth of thermal wave can be defined which gives a new division of heat conduction regime for experiments. The thermal wave is expected to be observed when the system is shorter than the penetration depth. In the thermomass model, the penetration depth is about one magnitude larger than that in CV model. Consequently, it gives a wider region to observe thermal wave phenomena.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Silicone damper"

1

Hacke, P., K. Terwilliger, and S. Kurtz. In-Situ Measurement of Crystalline Silicon Modules Undergoing Potential-Induced Degradation in Damp Heat Stress Testing for Estimation of Low-Light Power Performance. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1090973.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Silicone damper' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography