Content Provider
Cambridge University Press
37
Directory of Open Access Journals: DOAJ Articles
11
DataCite Metadata Store (German National Library of Science and Technology)
8
University of Calgary Journal Hosting
7
ScienceDirect (Elsevier - via Crossref)
4
eCite UTAS (University of Tasmania)
4
Australian National University: ANU Digital Collections
2
Geological Society of London: Figshare
2
Cambridge University Press (via Crossref)
1
Central Washington University: ScholarWorks
1
Defense Technical Information Center: DTIC Technical Reports database
1
Hathi Trust Digital Library
1
Imperial College London: Spiral
1
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
1
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
1
Lund University Publications (LUP)
1
Northern Illinois University (NIU): Huskie Commons Repository
1
Portland State University: PDXScholar
1
The University of Maine: DigitalCommons@UMaine
1
The University of Waikato: Research Commons
1
University of California: eScholarship
1
University of Canterbury, Christchurch: UC Research Repository
1
University of Michigan: Digital Collections
1
University of Nebraska-Lincoln: DigitalCommons@UNL
1
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive)
1
Università degli Studi di Siena: USiena air
1
Wiley Online Library
1
Wiley Online Library (via Crossref)
1