Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
6
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
3
Gutenberg Open Science (Open-Science-Repository of the Johannes Gutenberg-University Mainz)
2
ePLUS - Open Access Publikationsserver der Universität Salzburg
2
Cologne University: KUPS
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
Munich University of Technology (TUM): mediaTUM
1
RWTH Aachen University: RWTH Publications
1
University of Tennessee, Knoxville: Trace
1
da|ra - Registration agency for social and economic data
1
mediarep
1