Content Provider
LeibnizOpen (The Leibniz Association)
20
Copernicus Publications: E-Journals
4
Directory of Open Access Journals: DOAJ Articles
4
Niedersächsisches Online-Archiv NOA
3
Unknown
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Institut national des sciences de l'Univers: HAL-INSU
1
KITopen (Karlsruhe Institute of Technologie)
1
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
1