Content Provider
Aarhus University: Research
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
6
Copernicus Publications: E-Journals
2
DataCite Metadata Store (German National Library of Science and Technology)
4
Durham University: Durham Research Online
1
ETH Zürich Research Collection
3
HELDA – University of Helsinki Open Repository
2
Institut national des sciences de l'Univers: HAL-INSU
5
Niedersächsisches Online-Archiv NOA
2
PubMed Central (PMC)
2
Springer Nature (via Crossref)
1
Université de Nantes: HAL-UNIV-NANTES
6
Unknown
4
Wiley Online Library
1