AAAS Journals (via EBSCO)
Academic Search Complete (EBSCO)
Academic Search Premier (EBSCO)
Academic Search Ultimate (EBSCO)
ASFA Database = Aquatic Sciences and Fisheries Abstracts Bibliographic Database
BASE (Bielefeld University Library) — via DOAJ, via HRCAK
Central and Eastern European Online Library (CEEOL)
Digital Collection and Catalogue of the Croatian Academy of Sciences and Arts: DiZbi.HAZU (institutional repository)
Directory of Open Access Journals (DOAJ)
Electronic Journals Library (via Hrcak)
ERIH Plus
Hopkins Libraries – katalog Catalyst (USA)
Italian National Agency for the Evaluation of Universities and Research Institutes (ANVUR)
Law Journal Library (HeinOnline)
Legal Collection (EBSCO)
Legal Source (EBSCO)
Library of Congress
National Library of Australia
Specific articles on ResearchGate
Portal HRČAK
Scientific Indexing Services (SIS)
Staats- und Universitätsbibliothek Fachbibliotheken (Hamburg)
SUNCAT – British periodical union catalogue
The Hague Academy of International Law.  Peace Palace Library
Italian National Agency for the Evaluation of Universities and Research Institutes (ANVUR)
University of Saskatchewan. University Library (Canada)
UPP in the SUDOC catalogue – ABES bibliographic agency
WorldCat (OCLC)
WZB (Berlin) : Electronic Journals (EU)