Content Provider
Washington State University: WSU Libraries Digital Collections
21
DataCite Metadata Store (German National Library of Science and Technology)
10
Directory of Open Access Journals: DOAJ Articles
7
ToRepo (University of Toyama Repository)
3
University of Tasmania: UTas ePrints
3
Unknown
3
Zenodo
3
Eötvös Loránd University: ELTE Digital Institutional Repository (EDIT)
2
MDPI Open Access Publishing
2
Masaryk University Journals
2
SUNY Open Access Repository (SOAR - State University of New York)
2
The State University of New York: SUNY Digital Repository
2
Arctic and Antarctic Research (E-Journal)
1
Brigham Young University (BYU): ScholarsArchive
1
GERY - Faculty of Geography Repository University of Belgrade
1
Infomotions, Inc.: Alex Catalogue of Electronic Texts
1
Lincoln University (New Zealand): Lincoln U Research Archive
1
Marine Medicine (E-Journal)
1
Ohio State University (OSU): Knowledge Bank
1
PennState: Digital Collections
1
Santa Clara University: Scholar Commons
1
Technická univerzita v Liberci: DSpace Repository 6.3
1
The Repository of the University of Silesia (RE-BUŚ)
1
University of California: eScholarship
1
University of Canterbury, Christchurch: UC Research Repository
1
University of North Texas: UNT Digital Library
1
Western Kentucky University (WKU): TopScholar
1