[1] Yulin Normal Univ, Guangxi Coll & Univ Key Lab Complex Syst Optimizat, Yulin 537000, Guangxi, Peoples R China
[2] FPT Univ, Dept Math, Hoa Lac High Tech Pk,Km29 Thang Long Highway, Hanoi, Vietnam
[3] Tech Univ Berlin, Inst Math, Str 17 Juni 136, D-10623 Berlin, Germany
[4] Nanjing Univ, Dept Math, Nanjing 210093, Jiangsu, Peoples R China
[5] Jagiellonian Univ Krakow, Fac Math & Comp Sci, ul Lojasiewicza 6, PL-30348 Krakow, Poland
[6] Yulin Normal Univ, Guangxi Coll & Univ Key Lab Complex Syst Optimizat, Yulin 537000, Guangxi, Peoples R China