Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
20
Digital.CSIC (Spanish National Research Council)
17
DataCite Metadata Store (German National Library of Science and Technology)
16
Directory of Open Access Journals: DOAJ Articles
15
Unknown
14
Universidad de Las Palmas de Gran Canaria: Acceda
12
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
7
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
6
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
5
MDPI Open Access Publishing
5
National Institute of Polar Research Repository, Japan
4
Niedersächsisches Online-Archiv NOA
4
Copernicus Publications: E-Journals
3
HighWire Press (Stanford University)
3
Natural Environment Research Council: NERC Open Research Archive
3
PubMed Central (PMC)
3
University of East Anglia: UEA Digital Repository
3
Université de Nantes: HAL-UNIV-NANTES
3
Wiley Online Library
3
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2
Cambridge University Press
2
Ghent University Academic Bibliography
2
HAL Sorbonne Université
2
Institut national des sciences de l'Univers: HAL-INSU
2
Instituto Español de Oceanografía: e-IEO
2
KU Leuven: Lirias
2
Pensoft Publishers
2
RI FURG (Repositório da Universidade Federal do Rio Grande)
2
ScienceDirect (Elsevier - via Crossref)
2
Scientia Marina (E-Journal)
2
Springer Nature (via Crossref)
2
Université d'Avignon et des Pays de Vaucluse: HAL
2
Université de Bourgogne (UB): HAL
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
Aix-Marseille Université: HAL
1
Ambiente & Água (E-Journal, Universidade de Taubaté)
1
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Caltech Authors (California Institute of Technology)
1
DIAL@USL-B (Université Saint-Louis, Bruxelles)
1
Directory of Open Access Books (DOAB)
1
Discovery - University of Dundee Online Publications
1
Dokuz Eylül University Research Information System
1
ENSTA ParisTech, Université Paris-Saclay: HAL (École Nationale Supérieure de Techniques Avancées)
1
HAL UNC (Université de la Nouvelle Calédonie)
1
Informa (via Crossref)
1
Muséum National d'Histoire Naturelle (MNHM): HAL
1
NTNU Open Archive (Norwegian University of Science and Technology)
1
Oxford University Press
1
Padua Research Archive (IRIS - Università degli Studi di Padova)
1
Polar Research
1
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