Content Provider
Copernicus Publications: E-Journals
6
ScholarsArchive@OSU (Oregon State University)
4
University of Copenhagen: Research
4
Natural Environment Research Council: NERC Open Research Archive
3
Niedersächsisches Online-Archiv NOA
3
Unknown
3
Springer Nature (via Crossref)
2
AAAS Resource Center (American Association for the Advancement of Science)
1
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre)
1
BORIS (Bern Open Repository and Information System, University of Bern)
1
DataCite
1
PubMed Central (PMC)
1
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive)
1