Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
5
RePEc (Research Papers in Economics)
4
Dryad Digital Repository (Duke University)
3
Zenodo
3
Biodiversity Heritage Library (BHL)
2
University of California: eScholarship
2
Arctic Institute of North America
1
Institut national de la recherche scientifique, Québec: Espace INRS
1
Springer Nature (via Crossref)
1
The University of Western Ontario: Scholarship@Western
1
University of Glasgow: Enlighten - Publications
1
University of Toronto: Research Repository T-Space
1