Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
43
Unknown
30
PANGAEA - Data Publisher for Earth & Environmental Science
24
Wiley Online Library
21
Directory of Open Access Journals: DOAJ Articles
19
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
14
Copernicus Publications: E-Journals
14
Institut national des sciences de l'Univers: HAL-INSU
11
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
10
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
10
Skemman (Iceland)
10
University of Copenhagen: Research
10
Cambridge University Press
9
Niedersächsisches Online-Archiv NOA
9
University of Bristol: Bristol Research
9
Natural Environment Research Council: NERC Open Research Archive
8
Université de Nantes: HAL-UNIV-NANTES
8
Aarhus University: Research
7
Lund University Publications (LUP)
7
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
6
Opin vísindi (Iceland)
6
PubMed Central (PMC)
6
University College London: UCL Discovery
6
White Rose Research Online (Universities of Leeds, Sheffield & York)
6
University of St Andrews: Research Portal
5
University of Tromsø: Munin Open Research Archive
5
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
5
HAL Sorbonne Université
4
ScienceDirect (Elsevier - via Crossref)
4
Springer Nature (via Crossref)
4
University of Cambridge, Department of Earth Sciences: ESC Publications
4
University of Southampton: e-Prints Soton
4
Université de Bretagne Occidentale: HAL
4
Delft University of Technology: Institutional Repository
3
ETH Zürich Research Collection
3
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
3
Queen's University Belfast Research Portal
3
Technical University of Denmark: DTU Orbit
3
The University of Manchester: Research Explorer
3
University of Hong Kong: HKU Scholars Hub
3
University of Lincoln: Lincoln Repository
3
Utrecht University Repository
3
Vrije Universiteit Amsterdam (VU): Research Portal
3
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3
Archives ouvertes de Paris-Saclay
2
Canadian Science Publishing
2
Cardiff University: ORCA (Online Research @ Cardiff)
2
CentAUR: Central Archive at the University of Reading
2
Dialnet - Portada de revistas (Universidad de La Rioja)
2
Edinburgh Research Archive (ERA - University of Edinburgh)
2
more ...