1. Department of Mathematics, Government College University, Faisalabad 38000, Pakistan
2. Abdus Salam School of Mathematical Sciences, GC University, Lahore 54600, Pakistan
3. National Engineering Laboratory for Modern Silk, College of Textile and Engineering, Soochow University, Suzhou 215003, China
4. School of Science, Xi’an University of Architecture and Technology, Xi’an 710055, China
5. School of Mathematics and Information Science, Henan Polytechnic University, Jiaozuo 454003, China
6. Department of Mathematics, Pabna University of Science and Technology, Pabna 6600, Bangladesh
7. Department of Mathematics, Comsat University, Islamabad 45550, Pakistan