1. Department of Mathematics, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand
2. Department of Mathematics and Sciences, Prince Sultan University, 11586 Riyadh, Saudi Arabia
3. Department of Mathematics, University of Malakand, Chakdara Dir(L), 18000 Khyber Pakhtunkhwa, Pakistan
4. Department of Mathematics, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
5. Department of Mathematics, Government Post Graduate Jahanzeb College, Swat, Khyber Pakhtunkhwa, Pakistan
6. Mathematics Department, Faculty of Science and Technology, Suan Dusit University, Bangkok 10300, Thailand