Content Provider
Wiley Online Library (via Crossref)
4
DataCite Metadata Store (German National Library of Science and Technology)
3
Directory of Open Access Journals: DOAJ Articles
2
SAGE Publications (via Crossref)
2
Archivio della ricerca dell'Università di Parma (CINECA IRIS)
1
Cambridge University Press
1
Cambridge University Press (via Crossref)
1
Canadian Science Publishing (via Crossref)
1
DORA Eawag
1
Dipòsit Digital de la Universitat de Barcelona
1
HELDA – University of Helsinki Open Repository
1
IRUA - Institutional Repository van de Universiteit Antwerpen
1
Jultika - University of Oulu repository
1
Lund University Publications (LUP)
1
NTNU Open Archive (Norwegian University of Science and Technology)
1
Qatar University: QU Institutional Repository
1
Research UNE - University of New England at Armidale, NSW Australia
1
Revistas Electronicas UACh en Texto Completo (Universidad Austral de Chile)
1
UFZ - Publication Index (Helmholtz-Centre for Environmental Research)
1
Umeå University: Publications (DiVA)
1
University of Basel: edoc
1
University of Copenhagen: Research
1
University of Pretoria: UPSpace
1
University of Tromsø: Munin Open Research Archive
1
Université du Québec à Trois-Rivières: Dépôt numérique de UQTR
1
Utrecht University Repository
1
Wageningen UR (University & Research Centre): Digital Library
1