Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
15
Directory of Open Access Journals: DOAJ Articles
7
Arctic Data Center (via DataONE)
5
University of Massachusetts: ScholarWorks@UMass Amherst
3
University of Washington, Seattle: ResearchWorks
3
Unknown
3
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
University of Groningen research database
2
University of Maine, School of Law: Digital Commons
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
Arctic Portal Library
1
Clark University: Clark Digital Commons
1
Copernicus Publications: E-Journals
1
Digital Commons University of South Florida (USF)
1
Digital Repository @ Iowa State University
1
Digital.CSIC (Spanish National Research Council)
1
Harvard University: DASH - Digital Access to Scholarship at Harvard
1
Institute for Marine Research: Brage IMR
1
MDPI Open Access Publishing
1
Niedersächsisches Online-Archiv NOA
1
Norwegian Institute for Water research: NIVA Open Access Archive (Brage)
1
PuSH - Publikationsserver des Helmholtz Zentrums München
1
PubMed Central (PMC)
1
The College of Wooster: Open Works
1
University of Alaska: ScholarWorks@UA
1
University of New Hampshire: Scholars Repository
1
University of Pennsylvania: ScholaryCommons@Penn
1
University of South Florida St. Petersburg: Digital USFSP
1
Wageningen UR (University & Research Centre): Digital Library
1
Xiamen University Institutional Repository
1
Zenodo
1