Content Provider
Wiley Online Library
2,214
Directory of Open Access Journals: DOAJ Articles
1,099
ScienceDirect (Elsevier)
1,056
ScienceDirect (Elsevier - via Crossref)
1,000
PubMed Central (PMC)
882
Springer Nature (via Crossref)
548
Unknown
471
Wiley Online Library (via Crossref)
455
Canadian Science Publishing
453
Canadian Science Publishing (via Crossref)
363
eCite UTAS (University of Tasmania)
344
DataCite Metadata Store (German National Library of Science and Technology)
343
Institute for Marine Research: Brage IMR
337
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
335
Open archive Norwegian University of Life Sciences: Brage NMBU
332
University of Stirling: Stirling Digital Research Repository
307
University of Bergen: Bergen Open Research Archive (BORA-UiB)
281
Université de Nantes: HAL-UNIV-NANTES
218
HighWire Press (Stanford University)
203
NTNU Open Archive (Norwegian University of Science and Technology)
195
MDPI Open Access Publishing
184
Oxford University Press
184
University of St Andrews: Research Portal
181
Technical University of Denmark: DTU Orbit
171
Nofima Knowledge Archive (Brage)
159
University of Tromsø: Munin Open Research Archive
154
Natural Resources Institute Finland: Jukuri
129
Wageningen UR (University & Research Centre): Digital Library
122
BioMed Central
121
Institut National de la Recherche Agronomique: ProdINRA
114
University of Tasmania: UTas ePrints
112
Cambridge University Press
102
HAL e2s UPPA (Université de Pau et des Pays de l'Adour)
102
Ghent University Academic Bibliography
99
Norwegian Institute for Nature Research: Brage NINA
99
University of the Highlands and Islands: Research Database of UHI
91
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR
90
Memorial University of Newfoundland: Research Repository
87
Portail HAL Institut Agro
86
PLOS
85
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
76
National Research Council Canada: NRC Publications Archive
75
HELDA – University of Helsinki Open Repository
63
Universidad de Chile: Repositorio académico
57
The Royal Society
52
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
51
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
50
DataCite
49
Oxford University Press (via Crossref)
49
The University of Queensland: UQ eSpace
49
more ...