Content Provider
Directory of Open Access Journals: DOAJ Articles
9
DataCite Metadata Store (German National Library of Science and Technology)
8
Scientific Periodicals of Ukraine (Ukrainian Research and Academic Network)
6
SSOAR - Social Science Open Access Repository
5
Jagiellonian University Repository
4
Charles University CU Digital repository
3
University of West Bohemia Digital Library
3
CyberLeninka (Scientific Electronic Library)
2
Electrical Engineering and Power Engineering (EE&PE - E-Journal)
2
Electronic Kharkiv National Pedagogical University Institutional Repository
2
Sapienza Università di Roma: CINECA IRIS
2
University of Copenhagen: Research
2
Université de Genève: Archive ouverte UNIGE
2
Zenodo
2
AU Digital Research Archive (American University)
1
Adam Mickiewicz University in Poznań: PRESSto
1
Defense Technical Information Center: DTIC Technical Reports database
1
East European Historical Bulletin
1
International Relations - Theory and Practical Aspects (E-Journal)
1
Krakow University: eRIKA (Repozytorium Instytucjonalne Krakowskiej Akademii im. Andrzeja Frycza Modrzewskiego)
1
Luleå University of Technology Publications (DiVA)
1
National Archive of PhD Theses (National Documentation Centre Greece)
1
Periodicals of Lviv University
1
Scuola Universitaria Superiore Pisa Sant'Anna: CINECA IRIS
1
Technical University of Ostrava: DSpace VŠB-TUO
1
The University of Manchester: Research Explorer
1
Toyo Eiwa University Repository
1
University of Economics, Prague (VŠE): Science and Research
1
University of Macedonia: Psepheda - Digital Library & Institutional Repository
1
University of Victoria (Canada): UVicDSpace
1
University of Vienna: u:theses
1
Vytautas Magnus University e-Journals
1
Vytautas Magnus University e-Publication Repository (VMU ePub)
1
eSSPUIR - Electronic Sumy State Pedagogical University named after A. S. Makarenko Institutional Repository
1