Content Provider
LeibnizOpen (The Leibniz Association)
20
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3
Institut national des sciences de l'Univers: HAL-INSU
3
Directory of Open Access Journals: DOAJ Articles
2
Unknown
2
Copernicus Publications: E-Journals
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Joint Research Centre, European Commission: JRC Publications Repository
1
NILU – Norwegian Institute for Air Research: NILU Brage
1
Niedersächsisches Online-Archiv NOA
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
TU Delft: Institutional Repository (Delft University of Technology)
1