[1] Natl Univ Sci & Technol NUST, Sch Elect Engn & Comp Sci SEECS, Dept Humanities & Sci, Islamabad, Pakistan
[2] King Khalid Univ, Coll Sci, Dept Math, Abha 61413, Saudi Arabia
[3] Univ Engn & Technol, Fac Basic Sci & Humanities, Dept Basic Sci & Humanities, Taxila, Pakistan
[4] Int Islamic Univ, Dept Math & Stat, Islamabad, Pakistan
[5] King Fahd Univ Petr & Minerals, Ctr Modeling & Comp Simulat, Res Inst, Dhahran, Saudi Arabia