Huang, Yu-Mei
Yan, Hui-Yin
Funding for this research was provided by:
National Natural Science Foundation of China (11571156)
MOE-LCSM, School of Mathematics and Statistics, Hunan Normal University
Article History
Received: 28 July 2019
Revised: 25 March 2020
Accepted: 18 May 2020
First Online: 27 August 2020