Content Provider
ScienceDirect (Elsevier - via Crossref)
17
DataCite Metadata Store (German National Library of Science and Technology)
4
Springer Nature (via Crossref)
2
Cambridge University Press
1
Directory of Open Access Journals: DOAJ Articles
1
Geological Society of London: Figshare
1
Université de Lausanne (UNIL): Serval - Serveur académique lausannois
1