Content Provider
LeibnizOpen (The Leibniz Association)
42
Aberdeen University Research Archive (AURA)
14
SSOAR - Social Science Open Access Repository
7
Unknown
6
UNESDOC - UNESCO Digital Library
5
Directory of Open Access Journals: DOAJ Articles
2
PQDT Open: Open Access Dissertations and Theses (ProQuest)
2
Aarhus University: OJS at The State and University Library
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Digital.CSIC (Spanish National Research Council)
1
Rhode Island College: DigitalCommons@RIC
1
Tidsskrift.dk (The Royal Library, Denmark)
1
University of Calgary Journal Hosting
1
University of Washington, Seattle: ResearchWorks
1
Zenodo
1