★ Google Scholar
★ Hein Online Database, W.S.HEIN, USA
★ Chinese Database of CEPS,
★ American Federal Computer Library center (OCLC), USA
★ Chinese Scientific Journals Database, VIP Corporation, Chongqing, P. R. China
★ Ulrich’s Periodicals Directory
★ ProQuest
★ Summon Serials Solutions
★ Publicon Science
★ Cite Factor 
★ Electronic Journals Library
★ Global Impact Factor
★ Journal Index

★ CrossRef