Content Provider
Memorial University of Newfoundland: Research Repository
16
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
5
ScienceDirect (Elsevier - via Crossref)
5
Directory of Open Access Journals: DOAJ Articles
4
HighWire Press (Stanford University)
4
DataCite Metadata Store (German National Library of Science and Technology)
2
ScienceDirect (Elsevier)
2
Springer Nature (via Crossref)
2
Canadian Science Publishing (via Crossref)
1
PubMed Central (PMC)
1
The BMJ
1
University of Alaska: ScholarWorks@UA
1
Unknown
1