Bystrushkin S.K. (Anapa, Russian Federation), Seliverstova I.G. (Anapa, Russian Federation), Geniatulina E.V. (Anapa, Russian Federation), Khlystova V.G. (Anapa, Russian Federation), Gribtsova L.S. (Anapa, Russian Federation), Tyutereva I.A. (Anapa, Russian Federation)