Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
8
Unknown
6
Digital Repository of Scientific Institutes (RCIN)
2
Directory of Open Access Journals: DOAJ Articles
2
GEO-LEOe-docs (FID GEO)
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
German Aerospace Center: elib - DLR electronic library
1
OPUS - Publication Server of the University of Stuttgart
1
University of Michigan: Digital Collections
1
University of Potsdam: publish.UP
1
University of Washington, Seattle: Digital Collections
1
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1
ePLUS - Open Access Publikationsserver der Universität Salzburg
1