Funding for this research was provided by:
National Natural Science Foundation of China (61761008)
Natural Science Foundation of Guangxi Province (2018GXNSFAA281238)
Project of Guangxi Colleges and Universities Key Laboratory of Mathematical and Statistical Model (2017GXKLM002)
Article History
Received: 27 October 2020
Accepted: 13 January 2022
First Online: 4 February 2022