1. School of Computer Science, Chengdu University, Chengdu, China
2. Department of Mathematics, COMSATS University Islamabad, Attock Campus, Pakistan
3. Department of Mathematics, College of Science and Humanity, Prince Sattam bin Abdulaziz University, Sulail, Saudi Arabia
4. Department of Mathematical Sciences, Faculty of Applied Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
5. King Khalid University, College of Arts & Sciences, Saudi Arabia