Chen, Xiaoling
Jia, Zhixin
Shi, Haigang
Mao, Caihong
Gu, Hongbing
Liu, Yongmei
Zhao, Yansheng
Funding for this research was provided by:
the National Natural Science Foundation of China (21304066)
the project supported by Special/Youth Foundation of Taiyuan University of Technology (2012L058)