Xiang, Shuhuang
Chen, Xiaojun
Zhou, Yang
Funding for this research was provided by:
National Natural Science Foundation of China
Central South University (Mathematics and Interdisciplinary Sciences Project)
Hong Kong Research Grant Council (PolyU153016/16P)
National Natural Science Foundation of China (11771454)
Article History
Received: 13 August 2017
Revised: 13 August 2018
Accepted: 16 August 2018
First Online: 23 August 2018