Content Provider
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
8
Unknown
8
DataCite Metadata Store (German National Library of Science and Technology)
7
University of Alaska: ScholarWorks@UA
4
Wiley Online Library
4
Springer Nature (via Crossref)
3
HighWire Press (Stanford University)
2
Digital.CSIC (Spanish National Research Council)
1
Hiroshima University: Institutional Repository (HiR)
1
Instituto Español de Oceanografía: e-IEO
1
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
1
PubMed Central (PMC)
1
University of Washington, Seattle: ResearchWorks
1