V.A. Safonov, N.I. Varminskaya, N.S. Mamontov, A.A. Voskanyan
Federal State Educational Institution of Higher Education «Sevastopol State University»
Russian Federation, Sevastopol, Universitetskaya St., 33
E-mail: nvarminska@gmail.com
DOI: 10.33075/2220-5861-2017-1-141-145