Content Provider
LeibnizOpen (The Leibniz Association)
38
Unknown
4
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Copernicus Publications: E-Journals
2
Niedersächsisches Online-Archiv NOA
2
University of Tromsø: Munin Open Research Archive
2
DataCite Metadata Store (German National Library of Science and Technology)
1
Université de Nantes: HAL-UNIV-NANTES
1