International indexing

1. CAB International

2. Index Copernicus

3. CAS Source Index (CASSI)

4. Central & Eastern European Academic Source (CEEAS)

5. Academic Search Ultimate (EBSCO)

6. Crossref

7. MIAR

8. WorldCat

9. Bielefeld Academic Search Engine (BASE)

10. National Library of Ukraine named after VI Vernadsky

11. Google Scholar

12. OpenAIRE

13. Directory of Open Access scholarly Resources (ROAD)

14. Open policy finder

15. CORE (COnnecting REpositories)

16. Scilit

17. Ulrich's Periodicals Directory

18. Korea Institute of Science and Technology Information (KISTI)

19. Dimensions

20. SJSU (California, United States) library

21. Electronic Journals Index, USA

22. TIB

23. SLUB

24. China National Knowledge Infrastructure (CNKI)