Content Provider
Unknown
68
University of Bergen: Bergen Open Research Archive (BORA-UiB)
50
Directory of Open Access Journals: DOAJ Articles
46
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
45
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
43
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
35
Copernicus Publications: E-Journals
33
PANGAEA - Data Publisher for Earth & Environmental Science
33
DataCite Metadata Store (German National Library of Science and Technology)
26
Université de Nantes: HAL-UNIV-NANTES
20
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
17
Niedersächsisches Online-Archiv NOA
15
Institut national des sciences de l'Univers: HAL-INSU
13
Natural Environment Research Council: NERC Open Research Archive
13
Université de Bretagne Occidentale: HAL
12
Digital.CSIC (Spanish National Research Council)
10
HighWire Press (Stanford University)
10
University of Southampton: e-Prints Soton
10
University of Tromsø: Munin Open Research Archive
10
PubMed Central (PMC)
9
University of Copenhagen: Research
9
Max Planck Society: MPG.PuRe
8
Institute for Marine Research: Brage IMR
7
University College London: UCL Discovery
7
Aarhus University: Research
6
DSpace@MIT (Massachusetts Institute of Technology)
6
MACAU: Open Access Repository of Kiel University
6
NORCE vitenarkiv (Norwegian Research Centre)
6
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
6
University of St Andrews: Research Portal
6
Defense Technical Information Center: DTIC Technical Reports database
5
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
5
NIOZ Repository (Royal Netherlands Institute for Sea Research)
5
University of East Anglia: UEA Digital Repository
5
OSKAR Bordeaux (Open Science Knowledge ARchive)
4
University of Cambridge, Department of Earth Sciences: ESC Publications
4
University of Hong Kong: HKU Scholars Hub
4
Archives ouvertes de Paris-Saclay
3
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
3
Lund University Publications (LUP)
3
Polar Research (E-Journal)
3
Skemman (Iceland)
3
Springer Nature (via Crossref)
3
University of the Highlands and Islands: Research Database of UHI
3
Utrecht University Repository
3
White Rose Research Online (Universities of Leeds, Sheffield & York)
3
Wiley Online Library
3
École Polytechnique, Université Paris-Saclay: HAL
3
Apollo - University of Cambridge Repository
2
Cardiff University: ORCA (Online Research @ Cardiff)
2
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