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1

Murphy, W. F. "On vibrational force field calculations." Canadian Journal of Chemistry 69, no. 11 (1991): 1672–78. http://dx.doi.org/10.1139/v91-245.

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A series of computer routines for performing normal coordinate calculations of harmonic vibrational frequencies is described. These are designed for operation on current-generation computers having direct-access storage. Example results are given for the chain isomer of disulfur difluoride. Key words: vibrational force field calculations, normal coordinate calculations, harmonic force fields.
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2

Gough, K. M., W. F. Murphy, and Krishnan Raghavachari. "The harmonic force field of propane." Journal of Chemical Physics 87, no. 6 (1987): 3332–40. http://dx.doi.org/10.1063/1.453027.

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3

Bautista, Eddy J., and Jorge M. Seminario. "Harmonic force field for glycine oligopeptides." International Journal of Quantum Chemistry 108, no. 1 (2007): 180–88. http://dx.doi.org/10.1002/qua.21413.

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4

Bellido, Edson P., and Jorge M. Seminario. "Harmonic force field for nitro compounds." Journal of Molecular Modeling 18, no. 6 (2011): 2805–11. http://dx.doi.org/10.1007/s00894-011-1273-3.

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5

Smolar, V. A., T. I. Karyakina, and I. I. Maglevanny. "Effects of a Perpendicularly Applied Magnetic Field on Harmonically Driven Quasi-two-dimensional Electron Gas: the Static Macrostates Symmetry Breaking and Generation of Even Harmonics in System Output." Nelineinaya Dinamika 17, no. 2 (2021): 141–56. http://dx.doi.org/10.20537/nd210201.

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In this paper, we consider activation processes in a nonlinear metastable system based on a quasi-two-dimensional superlattice and study the dynamics of such a system, which is externally driven by a harmonic force in regimes of controlled instabilities. The spontaneous transverse electric field is considered as an order parameter and the forced violations of the order parameter are considered as a response of a system to periodic driving. The internal control parameters are the longitudinal applied electric field, the sample temperature and the magnetic field which is orthogonal to the superl
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6

McKean, D. C., G. P. McQuillan, W. F. Murphy, and F. Zerbetto. "Vibrational spectrum and harmonic force field of trimethylphosphine." Journal of Physical Chemistry 94, no. 12 (1990): 4820–31. http://dx.doi.org/10.1021/j100375a014.

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7

Wiberg, Kenneth B., Yvonne Thiel, Lionel Goodman, and Jerzy Leszczynski. "Acetaldehyde: Harmonic Frequencies, Force Field, and Infrared Intensities." Journal of Physical Chemistry 99, no. 38 (1995): 13850–64. http://dx.doi.org/10.1021/j100038a016.

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8

Murphy, W. F., F. Zerbetto, J. L. Duncan, and D. C. McKean. "Vibrational spectrum and harmonic force field of trimethylamine." Journal of Physical Chemistry 97, no. 3 (1993): 581–95. http://dx.doi.org/10.1021/j100105a010.

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9

Duncan, J. L., and A. M. Ferguson. "A general harmonic force field for methyl silane." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 52, no. 11 (1996): 1515–20. http://dx.doi.org/10.1016/0584-8539(96)01687-x.

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10

Law, M. M., J. L. Duncan, and I. M. Mills. "The general harmonic force field of methyl fluoride." Journal of Molecular Structure: THEOCHEM 260 (July 1992): 323–31. http://dx.doi.org/10.1016/0166-1280(92)87052-2.

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11

Black, G. M., and M. M. Law. "The General Harmonic Force Field of Methyl Chloride." Journal of Molecular Spectroscopy 205, no. 2 (2001): 280–85. http://dx.doi.org/10.1006/jmsp.2000.8275.

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12

Gong, Chen Bin, Qing Hao Wang, Gang Chen, et al. "Research on Harm of Harmonics on Electrical Equipment." Advanced Materials Research 986-987 (July 2014): 1846–49. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1846.

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Through the analysis of harmonics caused by transformer, capacitor, electromagnetic voltage transformer and other accident, harmonics is an important indicator of power quality, which has been included in the “pollution" of power grid is found. In order to understand the harmonic, this paper from the concept of quality of electric energy, and then gradually extended to the field of harmonics. This paper firstly introduces the various reasons and equipment may produce harmonic, Secondly, illustrate harm of harmonic to operation of transformers, capacitors, electromagnetic voltage transformers a
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13

Wang, Shanming, Yonghong Xia, Shaogang Huang, Arui Qiu, and Xiangheng Wang. "Research on new hybrid excitation PM synchronous generators with tooth harmonic excitation." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 5 (2014): 1613–24. http://dx.doi.org/10.1108/compel-11-2013-0345.

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Purpose – In order to keep the advantages of PM generators and eliminate its disadvantage – difficulty in regulating the magnetic field, hybrid excitation is an effective way. The purpose of this paper is to propose a novel way to achieve hybrid excitation by use of tooth harmonic field. Design/methodology/approach – Unlike weakening the tooth harmonics field and EMF in traditional machines, in this paper the tooth harmonics field is proposed to form a novel hybrid excitation permanent magnet synchronous generator (HEPMSG). Findings – The generation mechanism of tooth harmonic electromotive fo
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14

Verma, U., and A. K. Sharma. "Laser second harmonic generation in a rippled density plasma in the presence of azimuthal magnetic field." Laser and Particle Beams 27, no. 4 (2009): 719–24. http://dx.doi.org/10.1017/s0263034609990498.

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AbstractThe strong azimuthal magnetic fields, observed in many laser plasma experiments, are shown to be a potential source of second harmonic generation. The laser imparts oscillatory velocity to electrons and exerts a longitudinal pondromotive force on them. This force in conjunction with the azimuthal magnetic field and density ripple produces a second harmonic current with significant transverse component. The latter produces resonant second harmonic radiation.
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15

Bukhari, Syed Sabir Hussain, Ghulam Jawad Sirewal, Faheem Akhtar Chachar, and Jong-Suk Ro. "Brushless Field Excitation Scheme for Wound Field Synchronous Machines." Applied Sciences 10, no. 17 (2020): 5866. http://dx.doi.org/10.3390/app10175866.

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A new harmonic field excitation technique for the brushless operation of wound field synchronous machines (WFSMs) is proposed in this paper. The proposed scheme involves conventional three-phase and single-phase inverters operating at different frequencies and supply input current to the armature winding simultaneously. This results in a composite output current of the inverters, which contains fundamental as well as the third harmonic current components. The fundamental is utilized to develop the stator field, on the other hand, the third harmonic is used for developing the pulsating magnetom
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16

Xie, Yaoming, Kangnian Fan, and James E. Boggs. "The harmonic force field and vibrational spectra of pyrrole." Molecular Physics 58, no. 2 (1986): 401–11. http://dx.doi.org/10.1080/00268978600101261.

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17

Ivashkevich, O. A., V. E. Matulis, Yu E. Nagornyi, and V. I. Repchenkov. "Harmonic force field of a system of bound atoms." Journal of Structural Chemistry 57, no. 5 (2016): 862–67. http://dx.doi.org/10.1134/s0022476616050036.

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18

Tarroni, Riccardo, Paolo Palmieri, Markus M. Hühn, and Nicholas C. Handy. "The harmonic and the anharmonic force field of FSN." Chemical Physics Letters 207, no. 2-3 (1993): 195–202. http://dx.doi.org/10.1016/0009-2614(93)87014-t.

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19

Duncan, J. L., D. A. Lawie, G. D. Nivellini, et al. "The empirical general harmonic force field of methylene chloride." Journal of Molecular Spectroscopy 121, no. 2 (1987): 294–303. http://dx.doi.org/10.1016/0022-2852(87)90053-1.

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20

Schrodt, Joseph K. "Techniques for improving Vibroseis data." GEOPHYSICS 52, no. 4 (1987): 469–82. http://dx.doi.org/10.1190/1.1442318.

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An ongoing program of field experiments to analyze vibrator‐earth response has verified two major problems in Vibroseis® data acquisition: amplitude and phase control of vibrator output, and suppression of vibrator‐generated harmonic distortion. This study confirms that these problems are more severe on rigid ground (i.e., frozen tundra) than on soil. The test results demonstrate that a large‐amplitude vibrator resonance at 40 Hz and a higher frequency (equal to or greater than 100 Hz) earth‐baseplate resonance dominate the vibrator‐frozen ground response. Adaptive, closed‐loop amplitude contr
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21

López-Navarrete, J. T., J. J. Quirante, and F. J. Ramírez. "Harmonic force field for the glycine molecule by semiempirical methods." Journal of Molecular Structure 268, no. 1-3 (1992): 249–61. http://dx.doi.org/10.1016/0022-2860(92)85075-r.

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22

MURPHY, W. F., F. ZERBETTO, J. L. DUNCAN, and D. C. MCKEAN. "ChemInform Abstract: Vibrational Spectrum and Harmonic Force Field of Trimethylamine." ChemInform 24, no. 18 (2010): no. http://dx.doi.org/10.1002/chin.199318038.

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23

WIBERG, K. B., Y. THIEL, L. GOODMAN, and J. LESZCZYNSKI. "ChemInform Abstract: Acetaldehyde: Harmonic Frequencies, Force Field, and Infrared Intensities." ChemInform 27, no. 4 (2010): no. http://dx.doi.org/10.1002/chin.199604031.

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24

Raghavachari, Krishnan, and Gary W. Trucks. "Highly correlated systems. Structure and harmonic force field of F2O2." Chemical Physics Letters 162, no. 6 (1989): 511–16. http://dx.doi.org/10.1016/0009-2614(89)87016-2.

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25

Deeley, C. M., and I. M. Mills. "Vibration-rotation spectra and the harmonic force field of HOCl." Journal of Molecular Spectroscopy 114, no. 2 (1985): 368–76. http://dx.doi.org/10.1016/0022-2852(85)90232-2.

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26

Nonella, Marco, and Paul Tavan. "An unscaled quantum mechanical harmonic force field for p-benzoquinone." Chemical Physics 199, no. 1 (1995): 19–32. http://dx.doi.org/10.1016/0301-0104(95)00220-i.

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27

HUSEBY, MORTEN, and JOHN GRUE. "An experimental investigation of higher-harmonic wave forces on a vertical cylinder." Journal of Fluid Mechanics 414 (July 10, 2000): 75–103. http://dx.doi.org/10.1017/s0022112000008533.

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First- and higher-harmonic wave loads on a vertical circular cylinder are investigated experimentally in a wave tank of small scale. The incoming waves are (periodic) Stokes waves with wave slope up to 0.24. A large set of waves which are long compared to the cylinder radius is calibrated. The first seven harmonic components of the measured horizontal force on the cylinder are analysed. The higher-harmonic forces are significantly smaller than the first-harmonic force for all wave parameters. The measurements are continued until the wave amplitude is comparable to the cylinder radius, where th
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28

Bukhari, Syed Sabir Hussain, Fareed Hussain Mangi, Irfan Sami, Qasim Ali, and Jong-Suk Ro. "High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology." Mathematics 9, no. 15 (2021): 1721. http://dx.doi.org/10.3390/math9151721.

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This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency. The proposed scheme involves two inverters. One of these inverters provides the three-phase fundamental-harmonic current to the armature winding, whereas the second inverter injects the single-phase high-harmonic i.e., 6th harmonic current in this case, to the neutral-point of the Y-connected armature winding. The injection of the high-harmonic current in the armature winding deve
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29

Korakianitis, T. "On the Prediction of Unsteady Forces on Gas Turbine Blades: Part 2—Analysis of the Results." Journal of Turbomachinery 114, no. 1 (1992): 123–31. http://dx.doi.org/10.1115/1.2927975.

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This article investigates the generation of unsteady forces on turbine blades due to potential-flow interaction and viscous-wake interaction from upstream blade rows. A computer program is used to calculate the unsteady forces on the rotor blades. Results for typical stator-to-rotor-pitch ratios and stator outlet-flow angles show that the first spatial harmonic of the unsteady force may decrease for higher stator-to-rotor-pitch ratios, while the higher spatial harmonics increase. This (apparently counterintuitive) trend for the first harmonic, and other blade row interaction issues, are explai
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30

Cramb, D. T., Y. Bos, H. M. Jemson, M. C. L. Gerry, and C. J. Marsden. "The microwave spectrum, harmonic force field and structure of chlorodifluoromethane, CHF2Cl." Journal of Molecular Structure 190 (November 1988): 387–400. http://dx.doi.org/10.1016/0022-2860(88)80298-9.

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31

Lunelli, B., and M. G. Giorgini. "The planar harmonic force field for 1,2-carbodicianocyclobuten-3,4-dione dianion." Journal of Molecular Structure 218 (March 1990): 303–8. http://dx.doi.org/10.1016/0022-2860(90)80284-q.

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32

Murphy, W. F., J. M. Fernandez-Sanchez, and Krishnan Raghavachari. "Harmonic force field and Raman scattering intensity parameters of n-butane." Journal of Physical Chemistry 95, no. 3 (1991): 1124–39. http://dx.doi.org/10.1021/j100156a020.

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33

Sarkkinen, H. "High-resolution infrared study on DCCI: harmonic force field of monoiodoacetylene." Journal of Molecular Spectroscopy 226, no. 1 (2004): 45–56. http://dx.doi.org/10.1016/j.jms.2004.03.007.

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34

Orphal, J., M. Morillon-Chapey, A. Diallo, and G. Guelachvili. "High-Resolution Infrared Spectra and Harmonic Force Field of Chlorine Nitrate." Journal of Physical Chemistry A 101, no. 6 (1997): 1062–67. http://dx.doi.org/10.1021/jp9619595.

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35

Gatehouse, Bethany, Holger S. P. Müller, Nils Heineking, and Michael C. L. Gerry. "Structure, harmonic force field and hyperfine coupling constants of nitrosyl chloride." J. Chem. Soc., Faraday Trans. 91, no. 19 (1995): 3347–55. http://dx.doi.org/10.1039/ft9959103347.

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36

Gough, K. M., and W. F. Murphy. "Harmonic force field and Raman trace scattering intensity parameters for cyclohexane." Journal of Chemical Physics 87, no. 3 (1987): 1509–19. http://dx.doi.org/10.1063/1.453261.

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37

Ozkabak, Ali G., Lionel Goodman, Surya N. Thakur, and Karsten Krogh‐Jespersen. "Complete harmonic force field for benzene ground state in‐plane vibrations." Journal of Chemical Physics 83, no. 11 (1985): 6047–48. http://dx.doi.org/10.1063/1.449589.

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38

Bérces, Attila, and Tom Ziegler. "The harmonic force field of benzene. A local density functional study." Journal of Chemical Physics 98, no. 6 (1993): 4793–804. http://dx.doi.org/10.1063/1.464983.

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39

Singh, Arvinder, and Naveen Gupta. "Higher harmonic generation by self-focused q-Gaussian laser beam in preformed collisionless plasma channel." Laser and Particle Beams 32, no. 4 (2014): 621–29. http://dx.doi.org/10.1017/s0263034614000639.

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AbstractThis paper presents an investigation of self-focusing of a q-Gaussian laser beam and its effect on harmonic generation in a preformed collisionless parabolic plasma channel. In the presence of a q-Gaussian laser beam, the carriers get redistributed from high field region to low field region on account of ponderomotive force as a result of which a transverse density gradient is produced in the channel which in turn generates plasma wave at pump frequency. Generated plasma wave interacts with the incident laser beam and generate higher harmonics of the incident laser beam. Moment theory
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40

Ren, Yu Bo, and Li Zhong Xu. "Analysis on the Finite Element of Electromechanic Coupling of Flexible Gear in Electromagnetic Harmonic Drive." Applied Mechanics and Materials 249-250 (December 2012): 771–77. http://dx.doi.org/10.4028/www.scientific.net/amm.249-250.771.

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In the harmonic electromagnetic drive motor, the rotating magnetic field may deform gear as well as the shape of interaction electromagnetic fields, thereby resulting in the interaction between electromagnetic field and the structure field. By analyzing the electromagnetic-structural coupling relationship of the system and conducting discretization, this paper established the finite element coupling equilibrium equations of electromagnetic field and structure field and discussed the coupling conditions between two fields as well as the boundary conditions of various fields, thus deducing the e
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41

Kozlowski, Pawel M., Andrzej A. Jarzȩcki, and Peter Pulay. "Vibrational Assignment and Definite Harmonic Force Field for Porphine. 1. Scaled Quantum Mechanical Results and Comparison with Empirical Force Field." Journal of Physical Chemistry 100, no. 17 (1996): 7007–13. http://dx.doi.org/10.1021/jp953619+.

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42

Ayub, Muhammad, Asif Hussain, Ghulam Jawad Sirewal, and Byung-il Kwon. "Wye-delta winding configuration for brushless operation of a wound field synchronous machine." International Journal of Applied Electromagnetics and Mechanics 64, no. 1-4 (2020): 1165–72. http://dx.doi.org/10.3233/jae-209433.

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This manuscript proposes a wye-delta winding configuration for brushless operation of a wound field synchronous machine (BL-WFSM). In existing third harmonically excited BL-WFSM topologies, the additional third harmonic component of the stator magnetomotive force (MMF) was produced by an extra thyristor drive circuit or by utilizing an additional inverter. In the proposed single inverter topology, the stator winding is divided into two coil sets: the wye coil and delta coil. Triplen harmonic currents are produced owing to the delta coils set and start to circulate in the delta coils. This trip
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43

Bostro¨m, A., and A. Karlsson. "Point-Force Excitation of an Elastic Plate With an Embedded Cavity." Journal of Applied Mechanics 52, no. 4 (1985): 937–42. http://dx.doi.org/10.1115/1.3169172.

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The propagation of elastic waves in a thick plate containing an embedded cavity is considered. The full elastodynamic equations are solved and both time-harmonic and pulse propagations are treated. The time-harmonic problem is solved using the null field approach, a method whose main characteristics are surface integral representations and expansions in spherical and planar vector wave functions. To obtain the pulse response, a Fourier integral in frequency is employed. Numerical examples are given showing the fields in both the time and frequency domains at a few selected locations on the pla
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44

Cortez, Michael H., Nicole R. Brinkmann, William F. Polik, Peter R. Taylor, Yannick J. Bomble, and John F. Stanton. "Factors Contributing to the Accuracy of Harmonic Force Field Calculations for Water." Journal of Chemical Theory and Computation 3, no. 4 (2007): 1267–74. http://dx.doi.org/10.1021/ct600347e.

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45

J. Marsden, Colin, and Brian J. Smith. "The harmonic force field and rz molecular structure of disulphur monoxide, S2O." Chemical Physics 141, no. 2-3 (1990): 325–34. http://dx.doi.org/10.1016/0301-0104(90)87067-l.

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46

Bérces, Attila, and Tom Ziegler. "The harmonic force field of benzene calculated by local density functional theory." Chemical Physics Letters 203, no. 5-6 (1993): 592–97. http://dx.doi.org/10.1016/0009-2614(93)85316-g.

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47

Brenner, Leonard J., Joerg Senekowitsch, and Robert E. Wyatt. "Coupled cluster calculation of the in-plane harmonic force field of benzene." Chemical Physics Letters 215, no. 1-3 (1993): 63–71. http://dx.doi.org/10.1016/0009-2614(93)89264-i.

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48

Lukovits, István. "Harmonic force field between the (0001) surface of graphite and adsorbed methane." Vibrational Spectroscopy 1, no. 2 (1990): 135–37. http://dx.doi.org/10.1016/0924-2031(90)80026-z.

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49

Anderson, W. Darlene, M. C. L. Gerry, and C. J. Marsden. "The microwave spectrum, harmonic force field, and structure of carbonyl chlorofluoride, OCCIF." Journal of Molecular Spectroscopy 114, no. 1 (1985): 70–83. http://dx.doi.org/10.1016/0022-2852(85)90338-8.

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50

Vegt, Wim. "Single Harmonic Black Holes." European Journal of Engineering Research and Science 5, no. 1 (2020): 57–75. http://dx.doi.org/10.24018/ejers.2020.5.1.1714.

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In this New Theory a “Single Harmonic Black Hole” (SHBH) has been considered to be the Gravitational-Electromagnetic Confinement of a Single Harmonic Electromagnetic Field Configuration in which a perfect equilibrium exists between the outward directed electromagnetic radiation pressure and the inward directed Electromagnetic-Gravitational Interaction force densities. This frequency transformation is possible because of the combined Lorentz / Doppler-Effect transformation during the collapse (contraction) of the radiation when the Gravitational Electromagnetic Confinement has been formed (Impl
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