Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
13
UmeƄ University: Publications (DiVA)
9
University of Stirling: Stirling Digital Research Repository
7
Lund University Publications (LUP)
6
PANGAEA - Data Publisher for Earth & Environmental Science
6
Wageningen UR (University & Research Centre): Digital Library
5
Directory of Open Access Journals: DOAJ Articles
4
PubMed Central (PMC)
4
University of Copenhagen: Research
4
Wiley Online Library (via Crossref)
4
Digital.CSIC (Spanish National Research Council)
3
Edinburgh Research Archive (ERA - University of Edinburgh)
3
Wiley Online Library
3
IRUA - Institutional Repository van de Universiteit Antwerpen
2
MDPI Open Access Publishing
2
Montana State University (MSU): ScholarWorks
2
Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA)
2
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
2
The Czech Academy of Sciences: Publication Activity (ASEP)
2
Unknown
2
Aarhus University: Research
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Institut national des sciences de l'Univers: HAL-INSU
1
Lancaster University: Lancaster Eprints
1
Lund University Publications Student Papers (LUP-SP)
1
NTNU Open Archive (Norwegian University of Science and Technology)
1
NWISRL Publications (Northwest Irrigation and Soils Reseach Laboratory, United Steates Department of Agriculture)
1
Natural Environment Research Council: NERC Open Research Archive
1
Polar Research (E-Journal)
1
RERO DOC Digital Library
1
ScienceDirect (Elsevier - via Crossref)
1
The University of Manchester: Research Explorer
1
University College London: UCL Discovery
1
University of Groningen research database
1
University of St Andrews: Research Portal
1
Vrije Universiteit Amsterdam (VU): Research Portal
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1