Content Provider
EconStor (German National Library of Economics, ZBW)
14
Unknown
14
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
3
PUB - Publications at Bielefeld University
2
mediarep
2
Cologne University: KUPS
1
Digital Library Thüringen
1
Freie Universität Berlin: Refubium (FU Berlin)
1
Open Access LMU (Ludwig-Maximilians-University Munich)
1
Publication Server of Goethe University Frankfurt am Main
1
University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)
1