Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,419
Arctic Data Center (via DataONE)
47
University of Alaska: ScholarWorks@UA
13
NOAA NCEI Environmental Data Archive (via DataONE)
6
Directory of Open Access Journals: DOAJ Articles
5
Research Workspace (via DataONE)
5
PubMed Central (PMC)
4
Unknown
4
Wiley Online Library
4
Xiamen University Institutional Repository
4
Defense Technical Information Center: DTIC Technical Reports database
3
Clark University: Clark Digital Commons
2
University of Tasmania: UTas ePrints
2
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Hathi Trust Digital Library
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
MDPI Open Access Publishing
1
Masaryk University Journals
1
OpenAgrar (OA)
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
Polar Research (E-Journal)
1
SAGE Publications (via Crossref)
1
SEANOE (Sea scientific open data publication)
1
University of Calgary Journal Hosting
1
University of Maryland: Digital Repository (DRUM)
1
Vrije Universiteit Amsterdam (VU): Research Portal
1
eCite UTAS (University of Tasmania)
1