Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4,588
PANGAEA - Data Publisher for Earth & Environmental Science
74
Unknown
40
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
32
Directory of Open Access Journals: DOAJ Articles
24
University of Tromsø: Munin Open Research Archive
24
Copernicus Publications: E-Journals
20
Springer Nature (via Crossref)
12
Arctic Data Center (via DataONE)
11
Niedersächsisches Online-Archiv NOA
11
Aarhus University: Research
10
Defense Technical Information Center: DTIC Technical Reports database
9
University College London: UCL Discovery
9
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
8
PubMed Central (PMC)
7
Stockholm University: Publications (DiVA)
7
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
6
Frontiers: Figshare
6
Max Planck Society: MPG.PuRe
6
Natural Environment Research Council: NERC Open Research Archive
6
ScienceDirect (Elsevier - via Crossref)
6
University of Southampton: e-Prints Soton
6
University of St Andrews: Research Portal
6
Wiley Online Library
6
ARPI - Archivio della Ricerca dell'Università di Pisa
4
Cardiff University: ORCA (Online Research @ Cardiff)
4
Institut national des sciences de l'Univers: HAL-INSU
4
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
4
Xiamen University Institutional Repository
4
Arctic Portal Library
3
Dryad Digital Repository (Duke University)
3
ETH Zürich Research Collection
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
KU Leuven: Lirias
3
Université de Nantes: HAL-UNIV-NANTES
3
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3
Apollo - University of Cambridge Repository
2
Cambridge University Press
2
Clemson University: TigerPrints
2
Columbia University: Academic Commons
2
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
2
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
2
Durham University: Durham Research Online
2
HighWire Press (Stanford University)
2
Imperial College London: Spiral
2
Institute for Marine Research: Brage IMR
2
JSTOR
2
Journals at the University of Arizona
2
Lund University Publications (LUP)
2
more ...