Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
198
Directory of Open Access Journals: DOAJ Articles
172
Defense Technical Information Center: DTIC Technical Reports database
104
Unknown
82
PANGAEA - Data Publisher for Earth & Environmental Science
58
Copernicus Publications: E-Journals
53
Wiley Online Library
49
PubMed Central (PMC)
41
Niedersächsisches Online-Archiv NOA
35
DataCite
31
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
29
University of Calgary Journal Hosting
29
Institut national des sciences de l'Univers: HAL-INSU
27
MDPI Open Access Publishing
25
University of Alaska: ScholarWorks@UA
25
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
22
Université de Nantes: HAL-UNIV-NANTES
22
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
19
HAL Sorbonne Université
18
National Institute of Polar Research Repository, Japan
16
Arctic Portal Library
15
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
15
ScienceDirect (Elsevier)
15
PLOS
14
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
12
University of Southampton: e-Prints Soton
12
École Polytechnique, Université Paris-Saclay: HAL
12
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
11
Muséum National d'Histoire Naturelle (MNHM): HAL
11
Naval Postgraduate School: Calhoun
11
Université de Paris: Portail HAL
11
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
11
Archives ouvertes de Paris-Saclay
10
Oxford University Press
10
ScienceDirect (Elsevier - via Crossref)
10
University College London: UCL Discovery
10
University of Washington, Seattle: ResearchWorks
10
Cambridge University Press
9
Springer Nature (via Crossref)
9
University of Maryland: Digital Repository (DRUM)
9
Biodiversity Heritage Library (BHL)
8
University of the Highlands and Islands: Research Database of UHI
8
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
7
HAL de l'Institut Polytechnique de Paris
7
Xiamen University Institutional Repository
7
Aarhus University: Research
6
ScholarsArchive@OSU (Oregon State University)
6
University of California Press
6
University of Tromsø: Munin Open Research Archive
6
Université de Bretagne Occidentale: HAL
6
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