Sun, Yongjun
Zhan, Liying
Cheng, Xiaokun
Zhang, Linan
Hu, Jie
Gao, Zibin
Funding for this research was provided by:
the Natural Science Foundation of China (NSFC 81200886, NSFC 81402886)
the Natural Science Foundation of Hebei Province (H2014208004)
the Science and Technology Project of Hebei Province (13397703D)
the Key Basic Research Program of the Application Foundation Research Project of Hebei Province (14967719D, 15962704D)