V.P. Evstigneev 1, 2, V.A. Naumova1, M.P. Evstigneev2
1 Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28
2 Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33
E-mail: vald_e@rambler.ru
DOI: 10.33075/2220-5861-2019-3-89-95