1. Dipartimento di Architettura, Università Dinapoli Federico II, Via Toledo 403, 80121 Napoli, Italy
2. Department of Mathematics and Statistics, International Islamic University Islamabad, Islamabad 44000, Pakistan
3. Department of Mathematics, Faculty of Sciences and Arts, King Abdulaziz University, Rabigh 21589, Saudi Arabia
4. Office of Research, Innovation and Commercialization, University of Management and Technology, Lahore 54770, Pakistan