Content Provider
Directory of Open Access Journals: DOAJ Articles
3
DataCite Metadata Store (German National Library of Science and Technology)
2
Apollo - University of Cambridge Repository
1
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1
Digital.CSIC (Spanish National Research Council)
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
The University of Manchester: Research Explorer
1
University College London: UCL Discovery
1
University of Tromsø: Munin Open Research Archive
1
Wesleyan University: WesScholar
1