BIOSIS Previews, BIOSIS Reviews Reports and Meetings, Scopus, EMBASE, Chemical Abstracts Service/SciFinder, ProQuest, ChemWeb, Google Scholar, PubsHub, Index Copernicus, Genamics JournalSeek, MediaFinder®-Standard Periodical Directory, J-Gate, CNKI Scholar, Suweco CZ, TOC Premier, EBSCO, Ulrich's Periodicals Directory, JournalTOCs and Dimensions.