[Chu, Yu-Ming] Hunan City Univ, Sch Sci, Yiyang 413000, Peoples R China.
[Alzahrani, Taher; Rashidah, Waleed; Ur Rehman, Shafiq] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Comp & Informat Sci, Informat Syst Dept, Riyadh 11432, Saudi Arabia.
[Rashid, Saima; Rashid, S] Govt Coll Univ, Dept Math, Faisalabad 38000, Pakistan.
[Rashid, Saima; Rashid, S] Lebanese Amer Univ, Dept Comp Sci & Math, Beirut 1401, Lebanon.
[Alkhatib, Mohammad] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Comp & Informat Sci, Comp Sci Dept, Riyadh 11432, Saudi Arabia.