1. Center for Applied Mathematics of Guangxi, School of Electronic Engineering and Automation and the School of Mathematics and Computational Science, Guangxi University Key Laboratory of Data Analysis and Computation, Guilin University of Electronic Technology, Guilin, China
2. Center for Applied Mathematics of Guangxi, School of Mathematics and Computational Science, Guangxi University Key Laboratory of Data Analysis and Computation, Guilin University of Electronic Technology, Guilin, China