Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
127
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
50
University of Lethbridge Digitized Collections
14
Research Data Australia (Australian National Data Service - ANDS)
13
North Dakota State University (NDSU): Digital Horizons
9
Hunter Library Digital Collections (Western Carolina University)
7
Oklahoma State University: Digital Collections @ OKSTATE Library
4
University of Otago: Research Archive (OUR Archive)
3
Unknown
3
Cambridge University Press
2
Colecciones digitales - Biblioteca Virtual del Banco de la República
2
Repozytorium Uniwersytetu w Białymstoku (RUB)
2
The University of Utah: J. Willard Marriott Digital Library
2
Auburn University Digital Library
1
Biblioteca Virtual de Defensa (BVD - Ministerio de Defensa de España)
1
Canadian Science Publishing (via Crossref)
1
Cleveland State University: EngagedScholarship@CSU
1
DataCite
1
Dryad Digital Repository (Duke University)
1
Hathi Trust Digital Library
1
JKI Open Journal Systems (Julius Kühn-Institut)
1
Natural Environment Research Council: NERC Open Research Archive
1
Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands)
1
Naturalis Institutional Repository
1
Repositorio Institucional del INGEMMET
1
Sistema de revistas y publicaciones de la Universidad ORT Uruguay
1
University of North Texas: UNT Digital Library
1
University of Tasmania: UTas ePrints
1
University of Wollongong, Australia: Research Online
1
Érudit.org (Université Montréal)
1