Wang, Dong
Jiang, Shidong
Wang, Xiao-Ping
Funding for this research was provided by:
Division of Mathematical Sciences (1720405)
Hong Kong Research Grants Council GRF grants (16302715, 16324416)
Hong Kong Research Grants Council GRF grants (16303318)
Article History
Received: 11 January 2019
Revised: 3 October 2019
Accepted: 5 October 2019
First Online: 19 October 2019