International indexing
1. Index Copernicus Journals Master List
3. Central & Eastern European Academic Source (CEEAS)
4. CrossRef
5. MIAR
6. WorldCat
7. Bielefeld Academic Search Engine (BASE)
8. National Library of Ukraine named after VI Vernadsky
9. Google Scholar (Google Академія)
13. ResearchBib
14. Directory of Open Access scholarly Resources (ROAD)
15. SHERPA RoMEO
16. Neliti
17. CORE (COnnecting REpositories)
18. Scilit
19. Ulrich's Periodicals Directory
20. ResearchGate
21. Lens
22. Korea Open Access Platform for Researchers (KOAR)
23. Paperity
24. SJSU (California, United States) library
25. Сobiss
26. SLUB
27. DeepDyve
28. China National Knowledge Infrastructure (CNKI)
