★ Cambridge Science Abstracts (CSA)

★ Ulrich’s Periodicals Directory

★ Database of EBSCO, USA

★ Chinese Scientific Journals Database, VIP Corporation, Chongqing, China

★ Chinese Database of CEPS, American Federal Computer Library center (OCLC), USA

★ Chemical Abstracts Service (CAS)

★ Google Scholar

★ Proquest, USA

★ CCRIS

★ ChemID Subset

★ DIRLINE

★ Gene-Tox, HSDB

★ TOXLINE/Subset

★ Publicon Science

★ RoMEO
★ Electronic Journals Library
★ AcademicKeys
★ CiteFactor (USA)
★ getCITED
★ Newjour
★ Scientific Indexing Services
★ INNO SPACE
★ SJournals