Content Provider
University of Potsdam: publish.UP
5
Freie Universität Berlin: Refubium (FU Berlin)
2
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
Stockholm University: Publications (DiVA)
1
University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive)
1
Würzburg University: Online Publication Service
1