Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
778
Arctic Data Center (via DataONE)
7
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3
Defense Technical Information Center: DTIC Technical Reports database
3
Directory of Open Access Journals: DOAJ Articles
3
Niedersächsisches Online-Archiv NOA
3
Université de Nantes: HAL-UNIV-NANTES
3
PubMed Central (PMC)
2
Copernicus Publications: E-Journals
1
HELDA – University of Helsinki Open Repository
1
Institut national des sciences de l'Univers: HAL-INSU
1
MDPI Open Access Publishing
1
MacSphere (McMaster University)
1
Saint Petersburg State University: Research Repository (DSpace SPbU)
1
University of Alaska: ScholarWorks@UA
1
University of Calgary Journal Hosting
1
University of Tromsø: Munin Open Research Archive
1
Université de Bourgogne (UB): HAL
1
Unknown
1
École Polytechnique, Université Paris-Saclay: HAL
1