1. School of Automation, Wuhan University of Technology , Hubei Wuhan 430070 , China
2. Department of Mathematics, COMSATS University Islamabad, Sahiwal Campus , Sahiwal 57000 , Pakistan
3. Department of Mathematics, COMSATS University Islamabad, Vehari Campus , Vehari 61100 , Pakistan
4. Department of Mathematics, The University of Lahore, Pakpattan Campus , Pakpattan 57400 , Pakistan
5. College of Computer and Communication Engineering, China University of Petroleum , Qingdao 266555 , China