Content Provider
Natural Environment Research Council: NERC Open Research Archive
1,206
Directory of Open Access Journals: DOAJ Articles
891
Cambridge University Press
456
ScienceDirect (Elsevier - via Crossref)
301
Springer Nature (via Crossref)
297
DataCite Metadata Store (German National Library of Science and Technology)
296
Wiley Online Library
296
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
279
ScienceDirect (Elsevier)
221
Unknown
210
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
207
Digital.CSIC (Spanish National Research Council)
203
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
164
Niedersächsisches Online-Archiv NOA
145
DataCite
129
University of Southampton: e-Prints Soton
103
Université de Nantes: HAL-UNIV-NANTES
99
Institut national des sciences de l'Univers: HAL-INSU
96
Frontiers (Publisher)
93
University of California: eScholarship
89
eCite UTAS (University of Tasmania)
89
Vernadsky National Library of Ukraine: DSpace
88
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
87
Utrecht University Repository
67
The Royal Society
58
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
58
Oxford University Press
56
University of East Anglia: UEA Digital Repository
55
Australian National University: ANU Digital Collections
53
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
52
Zenodo
52
University of Tasmania: UTas ePrints
51
HAL Sorbonne Université
49
Ghent University Academic Bibliography
48
Universidad de Chile: Repositorio académico
46
University of Bristol: Bristol Research
46
White Rose Research Online (Universities of Leeds, Sheffield & York)
46
University of Groningen research database
45
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
44
Durham University: Durham Research Online
43
University of Glasgow: Enlighten - Publications
43
Caltech Authors (California Institute of Technology)
42
Northumbria University, Newcastle: Northumbria Research Link (NRL)
42
Apollo - University of Cambridge Repository
40
University of St Andrews: Research Portal
38
University of the Highlands and Islands: Research Database of UHI
36
University College London: UCL Discovery
35
Informa
34
Magnolia press
34
Arctic Portal Library
32
more ...