Content Provider
Arctic Data Center (via DataONE)
1
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1
Cambridge University Press
1
Carolina Digital Repository (UNC - University of North Carolina)
1
DataCite Metadata Store (German National Library of Science and Technology)
27,420
De Gruyter (via Crossref)
1
Defense Technical Information Center: DTIC Technical Reports database
5
Directory of Open Access Journals: DOAJ Articles
3
Dove Medical Press
2
Environmental Protection Agency (EPA): Science Inventory
3
Georgia State University Library Digital Collections
1
Gulf of Mexico Research Initiative (via DataONE)
6
Halifax Public Libraries Digital Archives
1
HighWire Press (Stanford University)
4
Hunter Library Digital Collections (Western Carolina University)
30
Jultika - University of Oulu repository
3
Knowledge Network for Biocomplexity (via DataONE)
1
Molloy College: Digital Commons @ Molloy
2
NASA Technical Reports Server (NTRS)
1
NOAA NCEI Environmental Data Archive (via DataONE)
49
Natural Environment Research Council: NERC Open Research Archive
1
Nomos
1
North Dakota State University (NDSU): Digital Horizons
1
Oxford University Press (via Crossref)
2
PALNI Digital Library Collections (Private Academic Library Network of Indiana)
1
Research Data Australia (Australian National Data Service - ANDS)
1
Saint Louis University Libraries Digital Collections
1
The Portal to Texas History (University of North Texas)
2
The University of Alabama at Birmingham: UAB Libraries' Digital Collections
1
The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive)
1
The University of Utah: J. Willard Marriott Digital Library
2
UNC Dataverse
1
Universidade Federal de São Paulo (UNIFESP): Repositório Institucional
2
University of Alaska: ScholarWorks@UA
1
University of Alberta: Journal Hosting
1
University of Leicester: Leicester Research Archive (LRA)
1
University of Nebraska-Lincoln: DigitalCommons@UNL
1
University of North Carolina: UNC Digital Collections
8
University of Otago: Research Archive (OUR Archive)
1
University of Pittsburgh: Archive of European Integration (AEI)
2
University of Southampton: e-Prints Soton
1
Unknown
3
Utah State University: DigitalCommons@USU
1
Wiley Online Library
1
Wiley Online Library (via Crossref)
1
Érudit.org (Université Montréal)
2