Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
605
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
15
University of Tromsø: Munin Open Research Archive
15
Unknown
12
Directory of Open Access Journals: DOAJ Articles
10
PANGAEA - Data Publisher for Earth & Environmental Science
8
Copernicus Publications: E-Journals
5
ARPI - Archivio della Ricerca dell'Università di Pisa
3
Aarhus University: Research
3
Apollo - University of Cambridge Repository
3
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3
University College London: UCL Discovery
3
Niedersächsisches Online-Archiv NOA
2
Polar Research (E-Journal)
2
PubMed Central (PMC)
2
University of California: eScholarship
2
University of St Andrews: Research Portal
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
BORIS (Bern Open Repository and Information System, University of Bern)
1
Cambridge University Press
1
Digital Commons University of South Florida (USF)
1
ETH Zürich Research Collection
1
East Carolina University: The ScholarShip at ECU
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Frontiers (Publisher)
1
GEO-LEOe-docs (FID GEO)
1
Ghent University Academic Bibliography
1
HELDA – University of Helsinki Open Repository
1
Jagiellonian University Repository
1
MACAU: Open Access Repository of Kiel University
1
Max Planck Society: MPG.PuRe
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
Natural Environment Research Council: NERC Open Research Archive
1
PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University)
1
Polar Research
1
Springer Nature (via Crossref)
1
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
1
University of South Florida St. Petersburg: Digital USFSP
1
University of St Andrews: Digital Research Repository
1
University of Tromsø: Septentrio Academic Publishing
1
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca)
1
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste)
1
Wiley Online Library
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1