1. Department of Mathematics and Statistic, International Islamic University, Islamabad, Pakistan
2. NUIST Reading Academy 219 Ningliu Road, Nanjing, Jiangsu 210044, China
3. Department of Engineering Science, Bandırma Onyedi Eylül University, 10200 Bandırma, Balıkesir, Turkey
4. Department of Mathematics, Sana’a University, Sana’a, Yemen