Content Provider
ScienceDirect (Elsevier - via Crossref)
15
DataCite Metadata Store (German National Library of Science and Technology)
8
Copernicus Publications: E-Journals
6
PANGAEA - Data Publisher for Earth & Environmental Science
6
ScienceDirect (Elsevier)
6
Wiley Online Library
5
Opin vĂsindi (Iceland)
4
Cambridge University Press
2
DataCite
2
Niedersächsisches Online-Archiv NOA
2
Polar Research (E-Journal)
2
Springer Nature (via Crossref)
2
Zenodo
2
Informa
1
PubMed Central (PMC)
1
SAGE Publications (via Crossref)
1
Unknown
1
eLife
1
eLife (E-Journal - via Crossref)
1