Content Provider
Cambridge University Press
83
ScienceDirect (Elsevier - via Crossref)
27
Directory of Open Access Journals: DOAJ Articles
20
DataCite Metadata Store (German National Library of Science and Technology)
6
Frontiers (Publisher)
6
ScienceDirect (Elsevier)
3
Springer Nature (via Crossref)
3
De Gruyter (via Crossref)
2
Cambridge University Press (via Crossref)
1
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
1
Sciendo (de Gruyter - via CrossRef)
1
eCite UTAS (University of Tasmania)
1