Content Provider
Defense Technical Information Center: DTIC Technical Reports database
20
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR
9
HELDA – University of Helsinki Open Repository
8
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
6
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
4
Ghent University Academic Bibliography
2
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS)
2
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
1
Peking University Institutional Repository (PKU IR)
1
University of Leicester: Figshare
1
University of Leicester: Leicester Research Archive (LRA)
1