Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
8
Directory of Open Access Journals: DOAJ Articles
5
Natural Environment Research Council: NERC Open Research Archive
3
Unknown
3
Copernicus Publications: E-Journals
2
MDPI Open Access Publishing
2
Ohio State University (OSU): Knowledge Bank
2
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
Universidade Federal do Rio Grande do Sul (UFRGS): Lume
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Brigham Young University (BYU): ScholarsArchive
1
Central Washington University: ScholarWorks
1
Columbia University: Academic Commons
1
Digital.CSIC (Spanish National Research Council)
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Imperial College London: Spiral
1
Niedersächsisches Online-Archiv NOA
1
SciELO Brazil (Scientific Electronic Library Online)
1
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1
Université Grenoble Alpes: HAL
1
Université de Nantes: HAL-UNIV-NANTES
1
Utrecht University Repository
1