Content Provider
University of Tromsø: Munin Open Research Archive
38
Technical University of Denmark: DTU Orbit
35
SINTEF Open (Brage)
31
OpenAgrar (OA)
15
Canadian Science Publishing
10
Institute for Marine Research: Brage IMR
8
ScienceDirect (Elsevier - via Crossref)
8
Oxford University Press
7
SINTEF Open
7
PubMed Central (PMC)
5
ScienceDirect (Elsevier)
5
Wiley Online Library
4
NTNU Open Archive (Norwegian University of Science and Technology)
3
Ege University Institutional Repository
2
HighWire Press (Stanford University)
2
Nofima Knowledge Archive (Brage)
2
PLOS
2
University of Toronto: Research Repository T-Space
2
DataCite Metadata Store (German National Library of Science and Technology)
1
Oxford University Press (via Crossref)
1