Scopus, Netherlands

Directory of Open Access Journal (DOAJ), Sweden

Chemical Abstracts (CAS), USA

Abstracts Journal (AJ), Russia

Ulrich's Periodicals Directory (Ulrichsweb), USA

European Publications (EuroPub), UK

ICI World of Journals, Poland

Open J-Gate, India

China Science and Technology Journal Database, Chongqing VIP

Chinese Academic Journal Comprehensive Evaluation Database (CAJCED)

China Core Journal Alternative Database