For the last few days, you might have noticed errors when searching for journal articles in catalogues on our homepage.
Such errors occur due to the high loads on the servers of Crossref, the service providing metadata of scientific sources. We do not have any control over the servers of metadata suppliers, so please try searching for the required information again in case of any such situation. Usually, a second search query works right away and yileds the desired result.
The Grafiati team