Hao, Xiao-Chen
Ru, Xiao-Yue
Li, Xi-Da
Xin, Min-Jie
Funding for this research was provided by:
National Natural Science Foundation of China under (61403336)
the Natural Science Foundation of Hebei Province of China (F2015203342)
the Independent Research Project Topics A Category for Young Teacher of Yanshan University of China (13LGA008)