Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,016
Arctic Data Center (via DataONE)
35
Defense Technical Information Center: DTIC Technical Reports database
24
LeibnizOpen (The Leibniz Association)
22
University of Calgary Journal Hosting
19
Directory of Open Access Journals: DOAJ Articles
16
Unknown
13
Niedersächsisches Online-Archiv NOA
9
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8
Copernicus Publications: E-Journals
8
Wiley Online Library
6
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
5
PubMed Central (PMC)
5
Zenodo
5
Frontiers: Figshare
4
Institut national des sciences de l'Univers: HAL-INSU
4
MDPI Open Access Publishing
4
PANGAEA - Data Publisher for Earth & Environmental Science
4
ScholarsArchive@OSU (Oregon State University)
4
University of Alaska: ScholarWorks@UA
4
University of California: eScholarship
4
Aarhus University: Research
3
Arctic Council Repository
3
HAL Sorbonne Université
3
Université de Nantes: HAL-UNIV-NANTES
3
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
2
Caltech Authors (California Institute of Technology)
2
Frontiers (Publisher)
2
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
2
Max Planck Society: MPG.PuRe
2
National Research Council Canada: NRC Publications Archive
2
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
PeerJ Publishing
2
Technical University of Denmark: DTU Orbit
2
Texas A&M University Digital Repository
2
UNESDOC - UNESCO Digital Library
2
Vrije Universiteit Amsterdam (VU): Research Portal
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
Apollo - University of Cambridge Repository
1
Archives ouvertes de Paris-Saclay
1
Arctic Institute of North America
1
Cambridge University Press
1
Dalhousie University: DalSpace Institutional Repository
1
DergiPark Akademik (E-Journals)
1
Dryad Digital Repository (Duke University)
1
German Aerospace Center: elib - DLR electronic library
1
Indiana University: Digital Library of the Commons (DLC)
1
Institute for Marine Research: Brage IMR
1
Jultika - University of Oulu repository
1
King Abdullah University of Science and Technology: KAUST Repository
1
more ...