Bystrushkin S.K. (Anapa, Russian Federation), Kovalevskaya V.C. (Anapa, Russian Federation), Seliverstova I.G. (Anapa, Russian Federation), Khlystova V.G. (Anapa, Russian Federation), Biktagirov A.G. (Anapa, Russian Federation), Horosok T.A. (Anapa, Russian Federation)