Arianta
BazEkon
Bielefeld Academic Search Engine (BASE)
CEEOL
CEJSH
CrossRef
Directory of Open Access Journals (DOAJ)
EBSCO-CEEAS
Elektronische Zeitschriftenbibliothek (EZB)
ERIH PLUS
Google Scholar
h5 = 6
Most Wiedzy
PBN/POL-Index
Polish Medical Library (GBL)
ResearchGate
WorldCat