Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
21,048
The University of Utah: J. Willard Marriott Digital Library
28
NOAA NCEI Environmental Data Archive (via DataONE)
26
North Dakota State University (NDSU): Digital Horizons
16
Research Data Australia (Australian National Data Service - ANDS)
13
Zenodo
9
University of Washington, Seattle: Digital Collections
7
University of Lethbridge Digitized Collections
6
Defense Technical Information Center: DTIC Technical Reports database
5
Knowledge Network for Biocomplexity (via DataONE)
4
Hathi Trust Digital Library
3
American Museum of Natural History: AMNH scientific publications
2
Digital.CSIC (Spanish National Research Council)
2
Henry - Hydraulic Engineering Repository
2
Portland State University: PDXScholar
2
Washington State University: WSU Libraries Digital Collections
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Caltech Authors (California Institute of Technology)
1
Cambridge University Press
1
Cambridge University Press (via Crossref)
1
DIAL@USL-B (Université Saint-Louis, Bruxelles)
1
Directory of Open Access Journals: DOAJ Articles
1
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
Ghent University Academic Bibliography
1
Hunter Library Digital Collections (Western Carolina University)
1
INERIS: HAL (Institut National de l'Environnement Industriel et des Risques)
1
Informa (via Crossref)
1
Institut national des sciences de l'Univers: HAL-INSU
1
LillOA (HAL Lille Open Archive, Université de Lille)
1
MDPI Open Access Publishing
1
Naval Postgraduate School: Calhoun
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
PMLA - Modern Language Association Publications (via Crossref)
1
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML)
1
PubMed Central (PMC)
1
SAIC Digital Collections (School of the Art Institute of Chicago)
1
Skemman (Iceland)
1
UTSA Digital Collections (The University of Texas at San Antonio)
1
University of Cape Town: OpenUCT
1
University of Central Florida (UCF): STARS (Showcase of Text, Archives, Research & Scholarship)
1
University of Michigan: Digital Collections
1
University of Washington, Seattle: ResearchWorks
1
University of the Pacific, McGeorge School of Law: Scholarly Commons
1
University of the Pacific: Scholarly Commons
1
Université de Nantes: HAL-UNIV-NANTES
1
Université du Littoral Côte d'Opale portail
1
Unknown
1
Western Washington University: CEDAR (Contributing to Education through Digital Access to Research)
1
Wiley Online Library
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1