Content Provider
Directory of Open Access Journals: DOAJ Articles
74
PANGAEA - Data Publisher for Earth & Environmental Science
43
Natural Environment Research Council: NERC Open Research Archive
42
DataCite Metadata Store (German National Library of Science and Technology)
37
Unknown
35
Copernicus Publications: E-Journals
24
Digital.CSIC (Spanish National Research Council)
23
Niedersächsisches Online-Archiv NOA
20
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
15
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
15
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
12
eCite UTAS (University of Tasmania)
12
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
11
Ghent University Academic Bibliography
11
PubMed Central (PMC)
11
MDPI Open Access Publishing
10
DIAL@USL-B (Université Saint-Louis, Bruxelles)
9
Cambridge University Press
8
Université de Genève: Archive ouverte UNIGE
8
ScienceDirect (Elsevier - via Crossref)
7
Springer Nature (via Crossref)
7
University of Southampton: e-Prints Soton
7
Institut national des sciences de l'Univers: HAL-INSU
6
National Institute of Polar Research Repository, Japan
6
Universidad de Las Palmas de Gran Canaria: Acceda
6
University of Tasmania: UTas ePrints
6
Université de Nantes: HAL-UNIV-NANTES
6
Masaryk University Journals
5
Scientia Marina (E-Journal)
5
University of East Anglia: UEA Digital Repository
5
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
4
Arctic Portal Library
4
HighWire Press (Stanford University)
4
Instituto Español de Oceanografía: e-IEO
4
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
4
Pensoft Publishers
4
Rice University: Digital Scholarship Archive
4
University of Groningen research database
4
University of St Andrews: Research Portal
4
Apollo - University of Cambridge Repository
3
Caltech Authors (California Institute of Technology)
3
DIAL@UCLouvain (Université catholique de Louvain)
3
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
3
Magnolia press
3
NIOZ Repository (Royal Netherlands Institute for Sea Research)
3
RI FURG (Repositório da Universidade Federal do Rio Grande)
3
The University of Manchester: Research Explorer
3
Universidad Andrés Bello: Repositorio Institucional Académico
3
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
3
Universidad de Chile: Repositorio académico
3
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