Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
5
PANGAEA - Data Publisher for Earth & Environmental Science
4
Copernicus Publications: E-Journals
3
Directory of Open Access Journals: DOAJ Articles
3
Niedersächsisches Online-Archiv NOA
2
Unknown
2
Cambridge University Press
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
Delft University of Technology: Institutional Repository
1
GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
German Aerospace Center: elib - DLR electronic library
1
HighWire Press (Stanford University)
1
Journal of large-scale research facilities (JLSRF)
1
PubMed Central (PMC)
1
University of Tasmania: UTas ePrints
1