Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
38
Unknown
26
Directory of Open Access Journals: DOAJ Articles
24
Queen's University, Ontario: QSpace
24
Theses Canada/Thèses Canada (Library and Archives Canada)
14
University of Calgary Journal Hosting
14
Copernicus Publications: E-Journals
12
Canadian Science Publishing (via Crossref)
10
Niedersächsisches Online-Archiv NOA
9
University of Toronto: Research Repository T-Space
8
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
7
Institut national de la recherche scientifique, Québec: Espace INRS
7
McGill University: eScholarship@McGill
5
Université de Montréal (UdeM): Papyrus
5
Université de Nantes: HAL-UNIV-NANTES
5
Dryad Digital Repository (Duke University)
4
MDPI Open Access Publishing
4
Wiley Online Library
4
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
3
Institut national des sciences de l'Univers: HAL-INSU
3
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
3
Springer Nature (via Crossref)
3
University of Alberta: Era - Education and Research Archive
3
University of Waterloo, Canada: Institutional Repository
3
Zenodo
3
uO Research (University of Ottawa - uOttawa)
3
Borealis
2
Cambridge University Press
2
Canadian Science Publishing
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
Memorial University of Newfoundland: Research Repository
2
PubMed Central (PMC)
2
Queen's University, Ontario: OJS@Queen's University
2
RePEc (Research Papers in Economics)
2
ScienceDirect (Elsevier - via Crossref)
2
University of North Texas: UNT Digital Library
2
University of Saskatchewan: eCommons@USASK
2
Université du Québec à Trois-Rivières: Dépôt numérique de UQTR
2
Aarhus University: Research
1
Archives ouvertes de Paris-Saclay
1
BORIS (Bern Open Repository and Information System, University of Bern)
1
Dalhousie University: DalSpace Institutional Repository
1
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
1
DataSpace at Princeton University
1
Defense Technical Information Center: DTIC Technical Reports database
1
Digital Commons @ TRU Library (Thompson Rivers University)
1
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne)
1
Frontiers: Figshare
1
HELDA – University of Helsinki Open Repository
1
Hindawi Publishing Corporation
1
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