Content Provider
Unknown
402
Directory of Open Access Journals: DOAJ Articles
4
University of Calgary Journal Hosting
4
Copernicus Publications: E-Journals
3
MSpace at the University of Manitoba
2
University of California Press (via Crossref)
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Frontiers: Figshare
1
Hereon Publications (Helmholtz-Zentrum)
1
Institut national de la recherche scientifique, Québec: Espace INRS
1
Niedersächsisches Online-Archiv NOA
1
PubMed Central (PMC)
1
University of Bristol: Bristol Research
1