Liu, Guodong
Tian, Kun
Sun, Jinfang
Xiao, Derong
Yuan, Xingzhong
Funding for this research was provided by:
Special Projects for National Key Basic Research Program (973 Program) of China (2012CB426509)
National Natural Science Fund of China (40971285, 31370497)
Yunnan Science and Technology Plan (2008CA006)