Autori:
1. Pylyp Hovorov, O.M. Beketov National University of Urban Economy in Kharkiv, Ukraine
2. Anastasiia Kindinova, O.M. Beketov National University of Urban Economy in Kharkiv, Ukraine
3. Irina Ivankova, O.M. Beketov National University of Urban Economy in Kharkiv, Ukraine