Content Provider
LeibnizOpen (The Leibniz Association)
20
University of California: eScholarship
5
Unknown
5
DataCite Metadata Store (German National Library of Science and Technology)
4
Research Data Australia (Australian National Data Service - ANDS)
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Directory of Open Access Journals: DOAJ Articles
2
Institut national des sciences de l'Univers: HAL-INSU
2
Université de Bretagne Occidentale: HAL
2
Curtin University: espace
1
ETH Zürich Research Collection
1
Imperial College London: Spiral
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
Repositorio Institucional de la Universidad de La Guajira
1
The University of Southern Mississippi: The Aquila Digital Community
1