Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2,538
Research Data Australia (Australian National Data Service - ANDS)
29
LeibnizOpen (The Leibniz Association)
20
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
10
Unknown
8
WikiBooks - Open-content textbooks
5
Directory of Open Access Journals: DOAJ Articles
4
University of California: eScholarship
3
Copernicus Publications: E-Journals
2
NOAA NCEI Environmental Data Archive (via DataONE)
2
Natural Environment Research Council: NERC Open Research Archive
2
Niedersächsisches Online-Archiv NOA
2
PubMed Central (PMC)
2
Xiamen University Institutional Repository
2
Curtin University: espace
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
IEDA: US Antarctic Program Data Center (via DataONE)
1
Institutional Knowledge (InK) at Singapore Management University
1
Kansas State University: K-State Research Exchange (K-REx)
1
Macquarie University Research Portal
1
Magnolia press
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
National Institute of Polar Research Repository, Japan
1
Norwegian Institute for Nature Research: Brage NINA
1
Ohio State University (OSU): Knowledge Bank
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
Polar Research (E-Journal)
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
Schulich Scholars (Schulich School of Law, Dalhousie University)
1
Technical University of Denmark: DTU Orbit
1
The University of Adelaide: Digital Library
1
The University of Queensland: UQ eSpace
1
University of Tasmania: UTas ePrints
1
VGTU Journals (Vilnius Gediminas Technical University - Vilnius Tech)
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1
eCite UTAS (University of Tasmania)
1