1. Department of Mathematics, University of Wah 1 , Wah Cantt 47040, Pakistan
2. Department of Mathematics, Namal University 2 , Mianwali 42250, Pakistan
3. Department of Mechanics and Engineering Sciences, Peking University 3 , Beijing, China
4. Department of Quantitative Analysis, College of Business Administration, King Saud University 4 , P.O. Box 71115, Riyadh 11587, Saudi Arabia
5. Department of Mathematics and Information Technologies, Vice-Rector for Scientific Affairs, Tashkent State Pedagogical University 5 , Tashkent, Uzbekistan