Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
47
Unknown
37
PubMed Central (PMC)
32
Springer Nature (via Crossref)
32
University of St Andrews: Research Portal
32
eCite UTAS (University of Tasmania)
32
PANGAEA - Data Publisher for Earth & Environmental Science
28
Wiley Online Library (via Crossref)
22
Directory of Open Access Journals: DOAJ Articles
21
University of Tasmania: UTas ePrints
20
HighWire Press (Stanford University)
19
Cambridge University Press
16
Montana State University (MSU): ScholarWorks
16
ScienceDirect (Elsevier - via Crossref)
16
Canadian Science Publishing (via Crossref)
15
University of Canterbury, Christchurch: UC Research Repository
15
Aarhus University: Research
11
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
10
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
10
Université de Nantes: HAL-UNIV-NANTES
10
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
9
National Institute of Polar Research Repository, Japan
9
Macquarie University Research Portal
7
University of Pretoria: UPSpace
7
Wiley Online Library
7
ScienceDirect (Elsevier)
6
The University of Queensland: UQ eSpace
6
University of California: eScholarship
6
Natural Environment Research Council: NERC Open Research Archive
5
Oxford University Press (via Crossref)
5
The University of Adelaide: Digital Library
5
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
5
University of Alaska: ScholarWorks@UA
5
University of St Andrews: Digital Research Repository
5
BioMed Central
4
Defense Technical Information Center: DTIC Technical Reports database
4
Texas A&M University Digital Repository
4
Canadian Science Publishing
3
Digital Collections of Colorado (Colorado State University)
3
Informa (via Crossref)
3
Mountain Scholar (Digital Collections of Colorado and Wyoming)
3
The Royal Society (via Crossref)
3
The University of Waikato: Research Commons
3
Baylor University: BEARdocs
2
BioOne Online Journals
2
DSpace-CRIS @ ANLIS (Administración Nacional de Laboratorios e Institutos de Salud)
2
Griffith University: Griffith Research Online
2
HAL - Université de La Rochelle
2
King's College, London: Research Portal
2
MDPI Open Access Publishing
2
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