1. Department of Mathematics, University of Sargodha, 40100 Sargodha, Pakistan
2. Department of Applied Mathematics, Xi’an University of Technology, 710054 Xi’an, China
3. School of Mathematical Sciences, Universiti Sains Malaysia, George Town, 11800 Penang, Malaysia
4. Department of Mechanical Engineering, Shizuoka University, Shizuoka, Japan