Content Provider
LeibnizOpen (The Leibniz Association)
39
Unknown
4
DataCite Metadata Store (German National Library of Science and Technology)
2
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
2
Digital Commons University of South Florida (USF)
1
Montclair State University Digital Commons
1
The University of Adelaide: Digital Library
1
Universidad de Chile: Repositorio académico
1
University of South Florida St. Petersburg: Digital USFSP
1
University of Tasmania: UTas ePrints
1
Utrecht University Repository
1