Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
17
ArXiv.org (Cornell University Library)
12
Unknown
6
CERN Document Server (CDS)
5
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
3
Stockholm University: Publications (DiVA)
3
University of California: eScholarship
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Cambridge University Press (via Crossref)
2
KITopen (Karlsruhe Institute of Technologie)
2
Research Data Australia (Australian National Data Service - ANDS)
2
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
2
Université de Genève: Archive ouverte UNIGE
2
Université de Nantes: HAL-UNIV-NANTES
2
Zenodo
2
Aix-Marseille Université: HAL
1
Caltech Authors (California Institute of Technology)
1
DESY Publication Database (PUBDB)
1
Digital Repository @ Iowa State University
1
Directory of Open Access Journals: DOAJ Articles
1
Ghent University Academic Bibliography
1
Gutenberg Open Science (Open-Science-Repository of the Johannes Gutenberg-University Mainz)
1
Hindawi Publishing Corporation
1
Imperial College London: Spiral
1
Institut national des sciences de l'Univers: HAL-INSU
1
National Research Council Canada: NRC Publications Archive
1
ORA - Oxford University Research Archive
1
RWTH Aachen University: RWTH Publications
1
Skemman (Iceland)
1
The University of Adelaide: Digital Library
1
The University of Arizona: UA Campus Repository
1
University College London: UCL Discovery
1
University of Alabama Institutional Repository
1
University of Copenhagen: Research
1
Uppsala University: Publications (DiVA)
1
Via Sapientiae - The Institutional Repository at DePaul University
1