Content Provider
IEDA: Marine-Geo Digital Library (via DataONE)
2,828
DataCite Metadata Store (German National Library of Science and Technology)
159
University of Tasmania: UTas ePrints
154
Oxford University Press (via Crossref)
130
Directory of Open Access Journals: DOAJ Articles
114
IEDA: EarthChem Library (via DataONE)
108
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
89
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
87
University of Tromsø: Munin Open Research Archive
61
Unknown
51
Institute for Marine Research: Brage IMR
46
Springer Nature (via Crossref)
45
University of Alberta: Era - Education and Research Archive
40
Université de Nantes: HAL-UNIV-NANTES
36
The University of Queensland: UQ eSpace
27
Caltech Authors (California Institute of Technology)
26
IFIP Open Digital Library (International Federation for Information Processing)
23
Zenodo
22
Informa (via Crossref)
21
Theseus.fi (Open Repository of the Universities of Applied Sciences)
21
Croatian Digital Theses Repository (National and University Library in Zagreb)
18
Université Grenoble Alpes: HAL
17
University of British Columbia: cIRcle - UBC's Information Repository
15
Washington State University: WSU Libraries Digital Collections
15
Bibliotekovedenie [Library and Information Science] (E-Journal)
14
UNESDOC - UNESCO Digital Library
14
University of Washington, Seattle: Digital Collections
14
Dryad Digital Repository (Duke University)
12
University of Chicago Press (via Crossref)
12
NORA (National aggregator of open repositories of Russian universities)
11
CyberLeninka (Scientific Electronic Library)
10
Maine State Documents (Maine State Library)
10
PALNI Digital Library Collections (Private Academic Library Network of Indiana)
10
RUNIOS - Repository of Josip Juraj Strossmayer University of Osijek
10
Uppsala University: Publications (DiVA)
10
Kazan Federal University Digital Repository
9
Masaryk University: Open Services of Information System
9
SAGE Publications (via Crossref)
9
The Seattle Public Library Special Collections Online
9
University of Toronto Press (U Toronto Press - via Crossref)
9
Defense Technical Information Center: DTIC Technical Reports database
8
PRISM - University of Calgary Digital Repository
8
University of Vienna: Phaidra
8
Xiamen University Institutional Repository
8
DML-CZ (Czech Digital Mathematics Library)
7
De Gruyter (via Crossref)
7
E-LIS: Eprints in Library and Information Science
7
Jagiellonian University Repository
7
University of Akron: IdeaExchange@UAkron
7
University of Calgary Journal Hosting
7
more ...