Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4,943
Croatian Digital Theses Repository (National and University Library in Zagreb)
2,625
Unknown
1,185
Repository of the University of Ljubljana (RUL)
1,099
Digital Library of University of Maribor
1,098
Directory of Open Access Journals: DOAJ Articles
1,013
Charles University CU Digital repository
974
Marmara Üniversitesi: Açık Arşiv Hizmete Girdi
867
DataCite
732
Hrčak - Portal of scientific journals of Croatia
626
OLAC: Open Language Archives Community
600
RUNIOS - Repository of Josip Juraj Strossmayer University of Osijek
392
Zenodo
386
University of Tromsø: Munin Open Research Archive
365
WikiBooks - Open-content textbooks
331
Jagiellonian University Repository
320
DergiPark Akademik (E-Journals)
310
Repository of the University of Rijeka
310
The University of Split Repository
297
Umeå University: Publications (DiVA)
209
Digital Library of Jelenia Góra (Grodzka Biblioteka Publiczna Jelenia Gora)
199
OpenEdition
186
ArXiv.org (Cornell University Library)
183
Theseus.fi (Open Repository of the Universities of Applied Sciences)
169
Sveznalica (University of Healths Applied Services)
152
PubMed Central (PMC)
147
Federation of Finnish Learned Societies: Scientific Journals Online
141
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
139
Informa
132
Dove Medical Press
117
Informa (via Crossref)
117
Oxford University Press
115
Skemman (Iceland)
114
Macquarie University Research Portal
109
Tomas Bata University Zlín: TBU DSpace
108
University North Digital Repository
106
University of West Bohemia Digital Library
104
Doria (National Library of Finland)
96
Digital Repository Juraj Dobrila University of Pula
93
Australian National University: ANU Digital Collections
92
LaCRIS - University of Lapland Current Research System
92
Université de Nantes: HAL-UNIV-NANTES
92
Wiley Online Library
89
University of Economics, Prague (VŠE): Science and Research
86
University of Zadar Institutional Repository
83
Cambridge University Press
82
University of Michigan: Digital Collections
80
American University in Cairo: Rare Books and Special Collections Digital Library
79
Swinburne University of Technology: Swinburne Research Bank
79
University of Tromsø: Septentrio Academic Publishing
75
more ...