A.B. Polonsky1,2,3, A.N. Serebrennikov1
1Institute of Natural and Technical Systems, RF, Sevastopol
E-mail: apolonsky5@mail.ru; swsilv@gmail.com
2Branch of Moscow State University in Sevastopol, RF, Sevastopol
3Sevastopol State University, RF, Sevastopol
DOI: 10.33075/2220-5861-2019-3-60-68