[1] Shanghai Univ, Shanghai Inst Appl Math & Mech, Shanghai 200072, Peoples R China
[2] Shanghai Univ, Shanghai Key Lab Mech Energy Engn, Shanghai 200072, Peoples R China
[3] Chongqing Univ Technol, Sch Math & Stat, Chongqing 400054, Peoples R China
[4] Tongren Coll, Dept Math & Comp Sci, Tongren 554300, Peoples R China