Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
11
WikiBooks - Open-content textbooks
3
OpenAgrar (OA)
2
DIAL@USL-B (Université Saint-Louis, Bruxelles)
1
Directory of Open Access Journals: DOAJ Articles
1
Eberhard Karls University Tübingen: Publication System
1
EconStor (German National Library of Economics, ZBW)
1
GEO-LEOe-docs (FID GEO)
1
Gutenberg Open Science (Open-Science-Repository of the Johannes Gutenberg-University Mainz)
1
Munich University of Technology (TUM): mediaTUM
1
PUB - Publications at Bielefeld University
1
TU Wien: reposiTUm
1
Unknown
1
Wiley Online Library
1
da|ra - Registration agency for social and economic data
1