Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
27
Cambridge University Press
26
Directory of Open Access Journals: DOAJ Articles
14
Unknown
9
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
6
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
4
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
4
DataCite
4
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
4
Lund University Publications (LUP)
3
PubMed Central (PMC)
2
Springer Nature (via Crossref)
2
University of California: eScholarship
2
ARPI - Archivio della Ricerca dell'Università di Pisa
1
AU Digital Research Archive (American University)
1
DRO - Deakin Research Online
1
Duke University Libraries: DukeSpace
1
Frontiers (Publisher)
1
IRIS Università degli Studi di Perugia
1
Inta Digital (ID - Instituto Nacional de Tecnología Agropecuaria)
1
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
1
LIU - Linköping University: Publications (DiVA)
1
Naturalis Institutional Repository
1
Sapienza Università di Roma: CINECA IRIS
1
The University of Queensland: UQ eSpace
1
Universidad de Chile: Repositorio académico
1
University of Washington, Seattle: ResearchWorks
1
Università degli Studi di Genova: CINECA IRIS
1
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive)
1
Wiley Online Library (via Crossref)
1
eCite UTAS (University of Tasmania)
1