[1] Anhui Univ Finance & Econ, Sch Stat & Appl Math, Bengbu 233030, Peoples R China
[2] Univ Ain Temouchent, Fac Econ & Management, Dept Econ, Temouchent, Algeria
[3] Cent Univ Kerala, Dept Tourism Studies, Kasaragod, India
[4] Rzeszow Univ Technol, Fac Management, Dept Finance Banking & Accountancy, PL-35959 Rzeszow, Poland
[5] Univ Rzeszow, Inst Econ & Finance, Dept Finance & Accounting, PL-35959 Rzeszow, Poland