Content Provider
Wiley Online Library (via Crossref)
2,080
ScienceDirect (Elsevier - via Crossref)
1,799
Directory of Open Access Journals: DOAJ Articles
1,351
Wiley Online Library
1,260
ScienceDirect (Elsevier)
1,080
Springer Nature (via Crossref)
879
Canadian Science Publishing (via Crossref)
567
DataCite Metadata Store (German National Library of Science and Technology)
503
Institute for Marine Research: Brage IMR
452
Canadian Science Publishing
381
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
378
eCite UTAS (University of Tasmania)
328
University of Stirling: Stirling Digital Research Repository
314
University of Bergen: Bergen Open Research Archive (BORA-UiB)
251
Nofima Knowledge Archive (Brage)
250
Open archive Norwegian University of Life Sciences: Brage NMBU
246
Frontiers (Publisher)
208
Université de Nantes: HAL-UNIV-NANTES
207
Oxford University Press
182
Oxford University Press (via Crossref)
165
Natural Resources Institute Finland: Jukuri
163
Technical University of Denmark: DTU Orbit
159
NTNU Open Archive (Norwegian University of Science and Technology)
152
Wageningen UR (University & Research Centre): Digital Library
147
University of Tromsø: Munin Open Research Archive
140
University of the Highlands and Islands: Research Database of UHI
127
University of Glasgow: Enlighten - Publications
123
Unknown
123
BioMed Central
116
University of St Andrews: Research Portal
116
Cambridge University Press
115
University of Tasmania: UTas ePrints
115
Dryad Digital Repository (Duke University)
100
Ghent University Academic Bibliography
91
Informa (via Crossref)
83
PLOS
81
Norwegian Institute for Nature Research: Brage NINA
79
Digital.CSIC (Spanish National Research Council)
71
National Research Council Canada: NRC Publications Archive
68
RePEc (Research Papers in Economics)
67
HAL e2s UPPA (Université de Pau et des Pays de l'Adour)
66
Aberdeen University Research Archive (AURA)
63
HELDA – University of Helsinki Open Repository
59
Open archive Nord universitet
59
Universidad de Chile: Repositorio académico
58
The University of Queensland: UQ eSpace
57
University of Strathclyde Glasgow: Strathprints
53
SINTEF Open (Brage)
52
The Royal Society
52
University of Copenhagen: Research
49
more ...