Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
177
PANGAEA - Data Publisher for Earth & Environmental Science
162
Directory of Open Access Journals: DOAJ Articles
31
DataCite
25
Unknown
23
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
17
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
15
Defense Technical Information Center: DTIC Technical Reports database
13
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
13
Wiley Online Library
12
Copernicus Publications: E-Journals
9
Niedersächsisches Online-Archiv NOA
9
University of Luxembourg: ORBilu - Open Repository and Bibliography
9
University of Pretoria: UPSpace
9
Cambridge University Press
8
Digital.CSIC (Spanish National Research Council)
8
Institut national des sciences de l'Univers: HAL-INSU
8
University of Cape Town: OpenUCT
8
University of Southampton: e-Prints Soton
8
Université de Nantes: HAL-UNIV-NANTES
7
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
6
PubMed Central (PMC)
6
Natural Environment Research Council: NERC Open Research Archive
4
Texas A&M University Digital Repository
4
University of Cambridge, Department of Earth Sciences: ESC Publications
4
University of São Paulo: Digital Library of Theses and Dissertations
4
Université de Bretagne Occidentale: HAL
4
Utrecht University Repository
4
Aarhus University: Research
3
Columbia University: Academic Commons
3
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
3
MDPI Open Access Publishing
3
ScienceDirect (Elsevier - via Crossref)
3
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3
Zenodo
3
ACS Publications (via Crossref)
2
AJOL - African Journals Online
2
Aix-Marseille Université: HAL
2
Archives ouvertes de Paris-Saclay
2
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
2
Discovery - University of Dundee Online Publications
2
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
2
HAL Sorbonne Université
2
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
2
Hereon Publications (Helmholtz-Zentrum)
2
HighWire Press (Stanford University)
2
Indiana University - Purdue University Indianapolis: IUPUI Scholar Works
2
Max Planck Society: MPG.PuRe
2
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
2
Météo-France: HAL
2
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