Wang, Yun-Ming
Chang, Pei-Yang
Zhao, Zuo-Fei
Wang, Hai-Jun
Funding for this research was provided by:
National Natural Science Foundation of China (21374028)
National Natural Science Foundation of China (21274056)
National Natural Science Foundation of Hebei province (B2015408007)
Doctoral Funds of Langfang Teachers University (LSLB201502)