Content Provider
Directory of Open Access Journals: DOAJ Articles
97
Natural Environment Research Council: NERC Open Research Archive
68
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
32
DataCite Metadata Store (German National Library of Science and Technology)
30
Digital.CSIC (Spanish National Research Council)
30
Unknown
22
Niedersächsisches Online-Archiv NOA
21
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
15
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
12
Frontiers (Publisher)
11
University of Southampton: e-Prints Soton
11
Cambridge University Press
8
Digital Commons University of South Florida (USF)
7
ScienceDirect (Elsevier - via Crossref)
7
Universidad de Las Palmas de Gran Canaria: Acceda
7
University of South Florida St. Petersburg: Digital USFSP
7
Université de Nantes: HAL-UNIV-NANTES
7
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
7
eCite UTAS (University of Tasmania)
7
Ege University Institutional Repository
6
NIOZ Repository (Royal Netherlands Institute for Sea Research)
6
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
6
Springer Nature (via Crossref)
6
University of California: eScholarship
6
University of Groningen research database
6
Wiley Online Library
6
Old Dominion University: ODU Digital Commons
5
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
5
Universidad de Chile: Repositorio académico
5
University of East Anglia: UEA Digital Repository
5
University of St Andrews: Research Portal
5
University of Tasmania: UTas ePrints
5
Cardiff University: ORCA (Online Research @ Cardiff)
4
HAL Sorbonne Université
4
Instituto del Mar del Perú: Repositorio Digital de IMARPE
4
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
4
Scientia Marina (E-Journal)
4
University of St Andrews: Digital Research Repository
4
Utrecht University Repository
4
Arctic Portal Library
3
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources)
3
Geological Quarterly
3
Institut national des sciences de l'Univers: HAL-INSU
3
Instituto Español de Oceanografía: e-IEO
3
James Cook University, Australia: ResearchOnline@JCU
3
OpenMETU (Middle East Technical University)
3
Padua Research Archive (IRIS - Università degli Studi di Padova)
3
RI FURG (Repositório da Universidade Federal do Rio Grande)
3
ScienceDirect (Elsevier)
3
The Open University: Open Research Online (ORO)
3
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