Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4
Directory of Open Access Journals: DOAJ Articles
2
Dryad Digital Repository (Duke University)
1
Institute for Marine Research: Brage IMR
1
Natural Environment Research Council: NERC Open Research Archive
1
The Royal Society
1
University of Groningen research database
1
Unknown
1
Wageningen UR (University & Research Centre): Digital Library
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1