Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
8,977
University of Michigan: Digital Collections
8
Zenodo
4
University of the Pacific, McGeorge School of Law: Scholarly Commons
3
University of the Pacific: Scholarly Commons
3
Australian National University: ANU Digital Collections
2
Directory of Open Access Journals: DOAJ Articles
2
Natural Environment Research Council: NERC Open Research Archive
2
Oklahoma State University: Digital Collections @ OKSTATE Library
2
Publikationsdatenbank der Fraunhofer-Gesellschaft
2
Brock University Digital Repository
1
Cambridge University Press
1
Cedarville University: DigitalCommons@Cedarville
1
DRO - Deakin Research Online
1
Digital.CSIC (Spanish National Research Council)
1
Digitale Sammlungen der Herzogin Anna Amalia Bibliothek Weimar (HAAB)
1
Hunter Library Digital Collections (Western Carolina University)
1
Instituto del Mar del PerĂº: Repositorio Digital de IMARPE
1
Macquarie University Research Portal
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
Memorial University of Newfoundland: Research Repository
1
NASA Technical Reports Server (NTRS)
1
Springer Nature (via Crossref)
1
Unknown
1
Wiley Online Library (via Crossref)
1