1. ip-science.thomsonreuters.com
  2. doaj.org
  3. erihplus.nsd.no
  4. ebscohost.com
  5. citefactor.org/contact
  6. scholar.google.com
  7. doisrspka.nub.rs
  8. crossref.org
  9. road.issn.org
  10. worldcat.org
  11. esjindex.org
  12. Index Copernicus value (ICV) for 2018 = 93,33