[1] Taras Shevchenko Natl Univ Kyiv, Dept Econ Cybernet, UA-01033 Kiev, Ukraine
[2] Natl Univ Life & Environm Sci Ukraine, Dept Econ Cybernet, UA-03041 Kiev, Ukraine
[3] Kharkov Natl Univ, Karazin Banking Inst, Educ & Sci Inst, Dept Banking Business & Financial Technol, UA-61022 Kharkiv, Ukraine
[4] Rzeszow Univ Technol, Fac Management, Dept Finance Banking & Accountancy, PL-35959 Rzeszow, Poland