Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
520
Unknown
80
Zenodo
58
Natural Environment Research Council: NERC Open Research Archive
47
Claremont Colleges Digital Library (CCDL)
37
Wiley Online Library (via Crossref)
34
Directory of Open Access Journals: DOAJ Articles
28
Wiley Online Library
28
Oregon Digital (University of Oregon/Oregon State University)
27
PubMed Central (PMC)
26
Memorial University of Newfoundland: Research Repository
24
COCOON - COllections de COrpus Oraux Numériques
22
OLAC: Open Language Archives Community
22
Norwegian Institute for Nature Research: Brage NINA
19
HighWire Press (Stanford University)
17
Oxford University Press
17
Gulf of Alaska Data Portal (via DataONE)
15
Springer Nature (via Crossref)
14
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
11
Canadian Science Publishing (via Crossref)
11
ORA - Oxford University Research Archive
11
University of Michigan, Museum of Zoology: Animal Diversity Web
10
University of Tromsø: Munin Open Research Archive
9
University of the Highlands and Islands: Research Database of UHI
9
Université de Nantes: HAL-UNIV-NANTES
9
BioOne Online Journals
8
JSTOR (via Crossref)
8
Magnolia press
8
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
8
NTNU Open Archive (Norwegian University of Science and Technology)
8
Biodiversity Heritage Library (BHL)
7
Cambridge University Press
7
Research Workspace (via DataONE)
7
Informa
6
JSTOR
6
Oxford University Press (via Crossref)
6
USGS Science Data Catalog (via DataONE)
6
Wageningen UR (University & Research Centre): Digital Library
6
Aarhus University: Research
5
DataverseNO
5
HAL - Université de La Rochelle
5
Knowledge Network for Biocomplexity (via DataONE)
5
ScienceDirect (Elsevier)
5
University College London: UCL Discovery
5
University of Bergen: Bergen Open Research Archive (BORA-UiB)
5
University of Southampton: e-Prints Soton
5
Université de Montpellier: HAL
5
Aberdeen University Research Archive (AURA)
4
Dryad Digital Repository (Duke University)
4
EPHE (Ecole pratique des hautes études, Paris): HAL
4
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