Content Provider
Directory of Open Access Journals: DOAJ Articles
300
Wiley Online Library
29
Wiley Online Library (via Crossref)
22
Cambridge University Press
16
Lund University Publications (LUP)
9
ScienceDirect (Elsevier - via Crossref)
9
DataCite Metadata Store (German National Library of Science and Technology)
7
Springer Nature (via Crossref)
5
Queen's University Belfast Research Portal
4
University of California: eScholarship
4
Digital Commons University of South Florida (USF)
2
University of Chicago Press (via Crossref)
2
University of South Florida St. Petersburg: Digital USFSP
2
Cambridge University Press (via Crossref)
1
De Gruyter (via Crossref)
1
IOP Publishing (via Crossref)
1
Imperial College London: Spiral
1
Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences)
1
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
1
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
1
Oxford University Press
1
Repositorio Institucional de la Universidad de Burgos (RIUBU)
1
The University of Waikato: Research Commons
1
Umeå University: Publications (DiVA)
1
University of Auckland Research Repository - ResearchSpace
1
University of Chicago Press
1
University of Leicester: Leicester Research Archive (LRA)
1
University of Liège: ORBi (Open Repository and Bibliography)
1
University of North Texas: UNT Digital Library
1
University of Sussex: Figshare
1
Università degli Studi di Foggia: CINECA IRIS Institutional Research Information System
1
Università degli Studi di Verona: Catalogo dei Prodotti della Ricerca (IRIS)
1
Université de Lausanne (UNIL): Serval - Serveur académique lausannois
1