Cheng, Long
Li, Xiaofan
Rong, Guan
Zhou, Chuangbing
Funding for this research was provided by:
Division of Mathematical Sciences (1620449)
National Natural Science Foundation of China (51579189, 41772305)
China Scholarship Council
The National Key Research and Development Program of China (2017YFC1501300)
Article History
Received: 4 June 2018
Accepted: 29 March 2019
First Online: 5 April 2019