Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
754
Unknown
315
University of California: eScholarship
186
Natural Environment Research Council: NERC Open Research Archive
109
NASA Technical Reports Server (NTRS)
57
University of Liège: ORBi (Open Repository and Bibliography)
55
PubMed Central (PMC)
50
University of Michigan: Deep Blue
39
Research Data Australia (Australian National Data Service - ANDS)
36
Imperial College London: Spiral
34
University of Washington, Seattle: ResearchWorks
31
UNSW Sydney (The University of New South Wales): UNSWorks
25
HELDA – University of Helsinki Open Repository
23
Frontiers: Figshare
14
Directory of Open Access Journals: DOAJ Articles
10
eCite UTAS (University of Tasmania)
9
KovsieScholar Repository (University of the Free State - UFS UV)
8
University of Leicester: Figshare
7
University of Canterbury, Christchurch: UC Research Repository
6
University of Luxembourg: ORBilu - Open Repository and Bibliography
4
University of Western Sydney (UWS): Research Direct
4
Apollo - University of Cambridge Repository
3
Boston University: OpenBU
3
Defense Technical Information Center: DTIC Technical Reports database
3
The Optical Society: Figshare
2
The University of Queensland: UQ eSpace
2
GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
1
ITU Academic Open Archive
1
Jultika - University of Oulu repository
1
LaCRIS - University of Lapland Current Research System
1
Monash University: Figshare
1
Open Research Library
1
Purdue University: e-Pubs
1
Royal Institute of Technology, Stockholm: KTHs Publication Database DiVA
1
Smithsonian Institution: Figshare
1
Södertörn University College: Publications (DiVA)
1
Tampere University: Trepo
1
Umeå University: Publications (DiVA)
1
VTechWorks (VirginiaTech)
1