Content Provider
Springer Nature (via Crossref)
992
AAAS Resource Center (American Association for the Advancement of Science - via Crossref)
285
ScienceDirect (Elsevier - via Crossref)
140
AAAS Resource Center (American Association for the Advancement of Science)
109
PLOS
92
PLOS (via CrossRef)
81
University College London: UCL Discovery
14
The Royal Society (via Crossref)
13
ScienceDirect (Elsevier)
10
The Royal Society
8
University of the Highlands and Islands: Research Database of UHI
8
Canadian Science Publishing (via Crossref)
6
Institute of Botany: IBCAS OpenIR (Chinese Academy Of Sciences)
6
Umeå University: Publications (DiVA)
6
Uppsala University: Publications (DiVA)
5
Canadian Science Publishing
4
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
4
Lund University Publications (LUP)
4
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences)
4
Science China Press
4
Stockholm University: Publications (DiVA)
4
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
3
LIU - Linköping University: Publications (DiVA)
3
Unknown
3
DIAL@UCLouvain (Université catholique de Louvain)
2
DIAL@USL-B (Université Saint-Louis, Bruxelles)
2
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences)
2
Imperial College London: Spiral
2
Oxford University Press (via Crossref)
2
The University of Queensland: UQ eSpace
2
Wiley Online Library (via Crossref)
2
Cambridge University Press
1
Curtin University: espace
1
DergiPark Akademik (E-Journals)
1
Harvard University: DASH - Digital Access to Scholarship at Harvard
1
LaCRIS - University of Lapland Current Research System
1
Oxford University Press
1
SAGE Publications
1
SAGE Publications (via Crossref)
1
Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA)
1
University of Leicester: Leicester Research Archive (LRA)
1
University of Liège: ORBi (Open Repository and Bibliography)
1
Xi'an Institute of Optics and Precision Mechanics: OPT OpenIR (Chinese Academy of Sciences, CAS)
1