International indexing
1. ERIH PLUS
2. Index Copernicus Journals Master List
5. CrossRef
6. MIAR
7. WorldCat
8. Bielefeld Academic Search Engine (BASE)
9. National Library of Ukraine named after VI Vernadsky
10. OpenAIRE
11. EuroPub
15. Google Scholar
16. Polska Bibliografia Naukowa (PBN)
17. SHERPA RoMEO
18. CORE (COnnecting REpositories)
19. Neliti
20. Scilit
21. Ulrich's Periodicals Directory
22. ResearchGate
23. Lens
24. Korea Open Access Platform for Researchers (KOAR)
25. Paperity
26. Dimensions
27. SJSU (California, United States) library
28. Сobiss
29. SLUB
30. DeepDyve