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)
National Natural Science Foundation of China (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