Content Provider
Directory of Open Access Journals: DOAJ Articles
35
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
22
Wiley Online Library
18
RePEc (Research Papers in Economics)
15
Niedersächsisches Online-Archiv NOA
11
Unknown
10
DataCite Metadata Store (German National Library of Science and Technology)
8
University of California: eScholarship
5
University of Potsdam: publish.UP
5
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Archives ouvertes de Paris-Saclay
2
Canadian Science Publishing
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
University of Southampton: e-Prints Soton
2
Université de Nantes: HAL-UNIV-NANTES
2
AAAS Resource Center (American Association for the Advancement of Science)
1
Cambridge University Press
1
Frontiers (Publisher)
1
IOP Publishing
1
Institut national de la recherche scientifique, Québec: Espace INRS
1
Institut national des sciences de l'Univers: HAL-INSU
1
Max Planck Society: MPG.PuRe
1
Murdoch University: Murdoch Research Repository
1
National Research Council Canada: NRC Publications Archive
1
OpenKnowledge@NAU (Northern Arizona University, Flagstaff)
1
Queen's University Belfast Research Portal
1
The Royal Society
1
University of Sussex: Figshare
1
University of Sussex: Sussex Research Online
1
Utrecht University Repository
1
Xiamen University Institutional Repository
1