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LeibnizOpen (The Leibniz Association)
19
DataCite Metadata Store (German National Library of Science and Technology)
2
Unknown
2
BORIS (Bern Open Repository and Information System, University of Bern)
1
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne)
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
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