Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
243
Colecciones digitales - Biblioteca Virtual del Banco de la República
8
RIUFOP - Repositório Institucional da UFOP (Universidade Federal de Ouro Preto)
4
The University of Utah: J. Willard Marriott Digital Library
4
North Dakota State University (NDSU): Digital Horizons
3
Aarhus University: Research
2
Claremont Colleges Digital Library (CCDL)
2
University of Lethbridge Digitized Collections
2
Università degli studi della Tuscia: Unitus DSpace
2
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto)
2
Unknown
2
WikiBooks - Open-content textbooks
2
DIAL@USL-B (Université Saint-Louis, Bruxelles)
1
Digital Commons University of South Florida (USF)
1
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne)
1
IRIS Università degli Studi di Palermo
1
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
1
Iowa State University Library Digital Collections
1
Loyola University Chicago Digital Special Collections
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands)
1
Naturalis Institutional Repository
1
Oxford University Press (via Crossref)
1
Padua Thesis and Dissertations Archive (Università degli Studi die Padova)
1
Portal de Periódicos Científicos da Universidade Federal Fluminense (UFF)
1
SAIC Digital Collections (School of the Art Institute of Chicago)
1
Saint Louis University Libraries Digital Collections
1
TEDE Universidade Federal do Amazonas
1
Universita degli Studi di Trieste: OpenstarTs
1
University of Copenhagen: Research
1
University of Michigan: Digital Collections
1
University of South Florida St. Petersburg: Digital USFSP
1
Università degli Studi della Campania "Luigi Vanvitelli": CINECA IRIS V:
1
Università degli Studi di Brescia: OPENBS - Open Archive UniBS
1
Università di Pisa: ETD (Electronic Theses and Dissertations)
1
Unvieristy of Agder: AURA
1