[1] Jiangsu Univ, Fac Sci, Dept Math, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Bahria Univ, Dept Comp Sci, Islamabad 44000, Pakistan
[3] Sejong Univ, Dept Mech Engn, Seoul 143747, South Korea
[4] Zayed Univ, Coll Nat & Hlth Sci, Dept Math & Stat, Abu Dhabi 144543, U Arab Emirates
[5] Zayed Univ, Coll Nat & Hlth Sci, Abu Dhabi 144543, U Arab Emirates