Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
273
Arctic Data Center (via DataONE)
14
Directory of Open Access Journals: DOAJ Articles
12
Unknown
12
Defense Technical Information Center: DTIC Technical Reports database
9
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
8
Copernicus Publications: E-Journals
7
Frontiers: Figshare
5
Aarhus University: Research
4
Digital.CSIC (Spanish National Research Council)
4
University of Southampton: e-Prints Soton
4
University of Tromsø: Munin Open Research Archive
4
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
Max Planck Society: MPG.PuRe
3
Natural Environment Research Council: NERC Open Research Archive
3
PubMed Central (PMC)
3
University College London: UCL Discovery
3
University of Cambridge, Department of Earth Sciences: ESC Publications
3
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
2
Arctic Council Repository
2
Australian National University: ANU Digital Collections
2
Institut national des sciences de l'Univers: HAL-INSU
2
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
2
NASA Technical Reports Server (NTRS)
2
National Institute of Polar Research Repository, Japan
2
Naval Postgraduate School: Calhoun
2
Niedersächsisches Online-Archiv NOA
2
ORA - Oxford University Research Archive
2
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
Springer Nature (via Crossref)
2
Universidade Federal do Rio Grande do Sul (UFRGS): Lume
2
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2
University of Calgary Journal Hosting
2
University of East Anglia: UEA Digital Repository
2
University of North Texas: UNT Digital Library
2
Université de Bretagne Occidentale: HAL
2
Aix-Marseille Université: HAL
1
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS)
1
Borealis
1
COS Center for Open Science (via Crossref)
1
Cambridge University Press
1
Cardiff University: ORCA (Online Research @ Cardiff)
1
CentAUR: Central Archive at the University of Reading
1
Claremont Colleges: Scholarship@Claremont
1
Columbia University: Academic Commons
1
DRO - Deakin Research Online
1
DataCite
1
De Gruyter (via Crossref)
1
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