Lu, Yuyan
Hou, Xiaonan
Zhao, Xiaowei
Liu, Mengyu
Shen, Fugang
Ren, Yuanyuan
Liu, Yunxiao
Huo, Shuying
Shen, Shigang
Funding for this research was provided by:
the Joint Funds of the Ph.D. Programs Foundation of Ministry of Education of China (20131301110003)
the Natural Science Foundation of Hebei Province (B2013201181, B2013201055)
the National Science Foundation of China (21406047)