Content Provider
Directory of Open Access Journals: DOAJ Articles
7
Copernicus Publications: E-Journals
6
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4
Institut national des sciences de l'Univers: HAL-INSU
4
Niedersächsisches Online-Archiv NOA
4
Unknown
3
University of Tromsø: Munin Open Research Archive
2
HighWire Press (Stanford University)
1
Jultika - University of Oulu repository
1
PubMed Central (PMC)
1
University of Leicester: Leicester Research Archive (LRA)
1
Université de Nantes: HAL-UNIV-NANTES
1