Content Provider
Directory of Open Access Journals: DOAJ Articles
8
ETH Zürich Research Collection
7
University of California: eScholarship
5
Unknown
5
Niedersächsisches Online-Archiv NOA
4
DataCite Metadata Store (German National Library of Science and Technology)
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
University of Nottingham: Repository@Nottingham
2
Université de Nantes: HAL-UNIV-NANTES
2
Institut national des sciences de l'Univers: HAL-INSU
1
Riviste Online SApienza - R.O.SA - 4 (Sapienza University of Rome)
1
Springer Nature (via Crossref)
1
University of Bergen: Bergen Open Research Archive (BORA-UiB)
1
University of Calgary Journal Hosting
1
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
1
Université Grenoble Alpes: HAL
1