A.P. Budonyi, L.A. Nichkova, A.N. Skakovskaya, S.A. Gutnik
Federal State Educational Institution of Higher Education «Sevastopol State University»
Russian Federation, Sevastopol, Universitetskaya St., 33
E-mail: andry09111@rambler.ru
DOI: 10.33075/2220-5861-2017-2-114-117
