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A.V. Neshumova1, V.V. Druzhin2, A. Yu. Antonenkova3, G.A.Gudkov4
1–3 Peoples' Friendship University of Russia (Moscow, Russia), 4 Hyperion Ltd. (Moscow, Russia)
S.N. Cherkashin1, I.A. Petrov2
1,2 Financial University under the Government of the Russian Federation (Moscow, Russia)