Content Provider
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Georg-August-Universität Göttingen: GOEDOC
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive)
1
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1