Content Provider
Apollo - University of Cambridge Repository
13
DataCite Metadata Store (German National Library of Science and Technology)
12
University of St Andrews: Digital Research Repository
6
Cambridge University Press
4
University of St Andrews: Research Portal
4
University of Tromsø: Munin Open Research Archive
4
Aarhus University: Research
2
Lancaster University: Lancaster Eprints
2
Natural Environment Research Council: NERC Open Research Archive
2
Niedersächsisches Online-Archiv NOA
2
AAAS Resource Center (American Association for the Advancement of Science)
1
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
LaCRIS - University of Lapland Current Research System
1
ScienceDirect (Elsevier - via Crossref)
1
Università degli Studi di Siena: USiena air
1
Utrecht University Repository
1