Content Provider
Directory of Open Access Journals: DOAJ Articles
14
DataCite Metadata Store (German National Library of Science and Technology)
7
MDPI Open Access Publishing
4
Umeå University: Publications (DiVA)
2
Unknown
2
Wageningen UR (University & Research Centre): Digital Library
2
Freie Universität Berlin: Refubium (FU Berlin)
1
Høgskolen i Innlandet: Brage INN
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
Leuphana University of Lüneburg: Forschungsindex FOX
1
MACAU: Open Access Repository of Kiel University
1
NOVA: The University of Newcastle Research Online (Australia)
1
Norwegian Institute for Nature Research: Brage NINA
1
Padua Research Archive (IRIS - Università degli Studi di Padova)
1
Repository of the University of Ljubljana (RUL)
1
The Czech Academy of Sciences: Publication Activity (ASEP)
1
The University of Adelaide: Digital Library
1
UFZ - Publication Index (Helmholtz-Centre for Environmental Research)
1
University of Calgary Journal Hosting
1
University of Otago: Research Archive (OUR Archive)
1
University of Tromsø: Munin Open Research Archive
1
University of Tromsø: Septentrio Academic Publishing
1
Università degli Studi di Siena: USiena air
1
Université de Lausanne (UNIL): Serval - Serveur académique lausannois
1