S.S. Mikhaylova1, E.S. Budaev2, S.D. Danilova3, A.N. Timofeev4

1–4 Financial University under the Government of the Russian Federation (Moscow, Russia)
1 ssmihajlova@fa.ru, 2 esbudaev@fa.ru, 3 sddanilova@fa.ru, 4 antimofeev@fa.ru