[1] Prince Songkla Univ, Div Computat Sci, Algebra & Applicat Res Unit, Fac Sci, Hat Yai 90110, Songkhla, Thailand
[2] Bacha Khan Univ, Dept Math & Stat, Charsadda, Khyber Pakhtunk, Pakistan
[3] Abdul Wali Khan Univ, Dept Math, Mardan, Khyber Pakhtunk, Pakistan
[4] Songkhla Rajabhat Univ, Fac Sci & Technol, Math Program, Songkhla 90000, Thailand