[1] Anhui Univ Finance & Econ, Sch Stat & Appl Math, Bengbu 233030, Peoples R China
[2] Lithuanian Ctr Social Sci, Inst Econ & Rural Dev, A Vivulskio Str 4a 13, LT-03220 Vilnius, Lithuania
[3] Anhui Univ Finance & Econ, Collaborat Innovat Ctr Ecol Econ & Management, Bengbu 233030, Peoples R China