Content Provider
Defense Technical Information Center: DTIC Technical Reports database
159
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
34
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR
26
University of Groningen research database
6
IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences)
5
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
5
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
4
University of St Andrews: Research Portal
4
Imperial College London: Spiral
3
Peking University Institutional Repository (PKU IR)
3
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS)
3
Aarhus University: Research
2
DataCite Metadata Store (German National Library of Science and Technology)
2
HELDA – University of Helsinki Open Repository
2
LaCRIS - University of Lapland Current Research System
2
University of Bristol: Bristol Research
2
Unknown
2
Caltech Authors (California Institute of Technology)
1
Ghent University Academic Bibliography
1
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
1
King's College, London: Research Portal
1
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
1
National Technical University of Athens (NTUA): DSpace
1
Repositório Institucional da Universidade de Aveiro (RIA)
1
University College London: UCL Discovery
1
University of the Highlands and Islands: Research Database of UHI
1
Ural Federal University (URFU): ELAR
1
Ural State Forest Engineering University (USFEU): Electronic Archive
1