| • Cabells Journalytics 
 | 
		| • Cambridge Structural Database 
 | 
		| • Chemical Abstracts Service (CAS) 
 | 
		| • ChronosHub 
 | 
		| • CiteFactor 
 | 
		| • CNKI Scholar 
 | 
		| • Google Scholar 
 | 
		| • Index Copernicus 
 | 
		| • InfoBase Index 
 | 
		| • J-Gate 
 | 
		| • QOAM 
 | 
		| • ResearchBib 
 | 
		| • Scilit 
 | 
		| • Semantic Scholar 
 | 
		| • Sherpa Romeo 
 | 
		| • Ulrich's Periodicals Directory 
 | 
		| • WorldCat 
 |