Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
82
Defense Technical Information Center: DTIC Technical Reports database
64
Stellenbosch University: SUNScholar Research Repository
36
Unknown
26
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
21
HighWire Press (Stanford University)
20
Directory of Open Access Journals: DOAJ Articles
19
Frontiers: Figshare
17
Natural Environment Research Council: NERC Open Research Archive
16
Institut national des sciences de l'Univers: HAL-INSU
15
Australian National University: ANU Digital Collections
14
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
14
Université de Nantes: HAL-UNIV-NANTES
13
Macquarie University Research Portal
9
PANGAEA - Data Publisher for Earth & Environmental Science
8
PubMed Central (PMC)
8
The Open University: Open Research Online (ORO)
8
Apollo - University of Cambridge Repository
7
Caltech Authors (California Institute of Technology)
7
HELDA – University of Helsinki Open Repository
7
The University of Queensland: UQ eSpace
7
University of Cambridge, Department of Earth Sciences: ESC Publications
7
University of Glasgow: Enlighten - Publications
7
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
6
Université de Lyon: HAL
6
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
6
Digital.CSIC (Spanish National Research Council)
5
ORA - Oxford University Research Archive
5
Research Data Australia (Australian National Data Service - ANDS)
5
The University of Utah: J. Willard Marriott Digital Library
5
University of Bristol: Bristol Research
5
Zenodo
5
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
4
Cambridge University Press
4
Canadian Science Publishing
4
Canadian Science Publishing (via Crossref)
4
David Rumsey Historical Map Collection (Cartography Associates)
4
Durham University: Durham Research Online
4
HAL Lyon 1 (University Claude Bernard Lyon 1)
4
Journals at the University of Arizona
4
LSU Digital Commons (Louisiana State University)
4
Magnolia press
4
NOAA NCEI Environmental Data Archive (via DataONE)
4
Queensland University of Technology: QUT ePrints
4
Universidad de Las Palmas de Gran Canaria: Acceda
4
University of Copenhagen: Research
4
University of Pretoria: UPSpace
4
University of Southampton: e-Prints Soton
4
University of St Andrews: Research Portal
4
Université Jean Monnet – Saint-Etienne: HAL
4
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