1. Lviv Polytechnic National University,Management and International Business Department,Lviv,Ukraine
2. Lviv Polytechnic National University,Lviv,Ukraine
3. Ivan Franko National University of Lviv,Applied Mathematics Department,Lviv,Ukraine
4. Lviv Polytechnic National University,Information Systems and Networks Department
5. West Ukrainian National University,Accounting and Taxation Department,Ternopil,Ukraine
6. National Technical University “KhPI“,Department of Accounting and Finance,Kharkiv,Ukraine