Content Provider
Cambridge University Press
78
ScienceDirect (Elsevier - via Crossref)
26
ScienceDirect (Elsevier)
4
Directory of Open Access Journals: DOAJ Articles
3
Informa (via Crossref)
2
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
2
Università degli Studi di Siena: USiena air
2
Cambridge University Press (via Crossref)
1
Frontiers (Publisher)
1
Frontiers: Figshare
1
The University of Maine: DigitalCommons@UMaine
1
The University of Queensland: UQ eSpace
1
University of California: eScholarship
1
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive)
1
Wiley Online Library
1
Wiley Online Library (via Crossref)
1
eCite UTAS (University of Tasmania)
1