[1] Soochow Univ, Coll Text & Clothing Engn, Natl Engn Lab Modern Silk, Suzhou, Peoples R China
[2] Henan Polytech Univ, Sch Math & Informat Sci, Jiaozuo, Peoples R China
[3] Xian Univ Architecture & Technol, Sch Sci, Xian, Peoples R China
[4] China Univ Min & Technol, Sch Math, Xuzhou, Jiangsu, Peoples R China
[5] King Abdulaziz Univ, Fac Sci, Dept Math, Jeddah, Saudi Arabia