Content Provider
Cambridge University Press
1,461
DataCite
799
ScienceDirect (Elsevier - via Crossref)
689
ScienceDirect (Elsevier)
622
DataCite Metadata Store (German National Library of Science and Technology)
46
University of California: eScholarship
37
University of California Press (via Crossref)
36
LeibnizOpen (The Leibniz Association)
29
Old Dominion University: ODU Digital Commons
19
University of California Press
19
Directory of Open Access Journals: DOAJ Articles
15
David Rumsey Historical Map Collection (Cartography Associates)
14
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
13
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
10
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
9
Unknown
9
DRO - Deakin Research Online
8
Cambridge University Press (via Crossref)
6
University of Liège: ORBi (Open Repository and Bibliography)
5
Ghent University Academic Bibliography
4
Griffith University: Griffith Research Online
4
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
4
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
4
The University of Queensland: UQ eSpace
4
University College London: UCL Discovery
4
University of Calgary Journal Hosting
4
Università degli Studi di Ferrara: CINECA IRIS
4
Utrecht University Repository
4
Australian National University: ANU Digital Collections
3
DIAL@UCLouvain (Université catholique de Louvain)
3
DIAL@USL-B (Université Saint-Louis, Bruxelles)
3
Digital Repository @ Iowa State University
3
Imperial College London: Spiral
3
Lund University Publications (LUP)
3
OhioLINK: Electronic Theses and Dissertations Center
3
PUBLISSO Fachrepositorium Lebenswissenschaften (ZB MED)
3
Research Data Australia (Australian National Data Service - ANDS)
3
San José State University: SJSU ScholarWorks
3
Texas A&M University Digital Repository
3
University of Massachusetts: ScholarWorks@UMass Amherst
3
W&M ScholarWorks
3
Zenodo
3
Aberdeen University Research Archive (AURA)
2
Biodiversity Heritage Library (BHL)
2
Central Washington University: ScholarWorks
2
Hathi Trust Digital Library
2
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
2
Stockholm University: Publications (DiVA)
2
Texas Tech University: TTU DSpace Repository
2
University at Albany, State University of New York (SUNY): Scholars Archive
2
more ...