Liu, Yan
Li, Wenxue
Feng, Jiqiang
Funding for this research was provided by:
NNSF of China (11301112, 11401136)
NNSF of Shandong Province (ZR2013AQ003, ZR2014AQ010)
China Postdoctoral Science Foundation funded project (2014T70313)
National Natural Science Foundation of China (61401283)
Educational Commission of Guangdong Province, China (2014KTSCX113)