1. School of Mathematics and Physics, China University of Geosciences, Wuhan 430074, China
2. Zhejiang Institute, China University of Geosciences, Hangzhou, Zhejiang 311305, China
3. Electrical, Electronic and Mechatronics Department, Technological Institute of San Luis Potosí, San Luis Potosí, México
4. Faculty of Mathematics and Mechanics, St. Petersburg State University, Peterhof, St. Petersburg, Russia
5. Faculty of Information Technology, University of Jyväskylä, Jyväskylä, Finland