Content Provider
LeibnizOpen (The Leibniz Association)
20
Unknown
4
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Université Grenoble Alpes: HAL
2
CESSDA DC Data Catalogue (Consortium of European Social Science Data Archives)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Defense Technical Information Center: DTIC Technical Reports database
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
Masaryk University: Open Services of Information System
1