Content Provider
Unknown
189
Directory of Open Access Journals: DOAJ Articles
106
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
93
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
75
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
68
Copernicus Publications: E-Journals
67
Université de Nantes: HAL-UNIV-NANTES
65
DataCite Metadata Store (German National Library of Science and Technology)
63
PANGAEA - Data Publisher for Earth & Environmental Science
59
Niedersächsisches Online-Archiv NOA
42
Digital.CSIC (Spanish National Research Council)
41
LeibnizOpen (The Leibniz Association)
39
Natural Environment Research Council: NERC Open Research Archive
36
PubMed Central (PMC)
36
Universidad de Las Palmas de Gran Canaria: Acceda
34
University of Southampton: e-Prints Soton
34
Institut national des sciences de l'Univers: HAL-INSU
32
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
29
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
23
Max Planck Society: MPG.PuRe
23
NIOZ Repository (Royal Netherlands Institute for Sea Research)
23
University of Cambridge, Department of Earth Sciences: ESC Publications
23
Wiley Online Library
21
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
20
eCite UTAS (University of Tasmania)
20
University of St Andrews: Research Portal
19
BORIS (Bern Open Repository and Information System, University of Bern)
18
DIAL@USL-B (Université Saint-Louis, Bruxelles)
18
Defense Technical Information Center: DTIC Technical Reports database
18
Apollo - University of Cambridge Repository
16
Université de Bretagne Occidentale: HAL
16
Utrecht University Repository
16
Archives ouvertes de Paris-Saclay
15
ORA - Oxford University Research Archive
15
University of Groningen research database
15
DSpace@MIT (Massachusetts Institute of Technology)
13
Ghent University Academic Bibliography
12
Collège de France: HAL
11
Springer Nature (via Crossref)
11
Texas A&M University Digital Repository
11
University of East Anglia: UEA Digital Repository
11
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
10
Instituto Español de Oceanografía: e-IEO
10
University College London: UCL Discovery
10
University of California: eScholarship
10
University of Tasmania: UTas ePrints
10
MDPI Open Access Publishing
9
Cambridge University Press
8
CentAUR: Central Archive at the University of Reading
8
Columbia University: Academic Commons
8
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