Yu.G. Bulychev 1, A.A. Mozol 2, A.V. Yachmenev 3

1-3 JSC «All-Russian Scientific Research Institute «Gradient» (Rostov-on-Don, Russian)

1 ProfBulychev@yandex.ru, 2 amozol@bk.ru, 3 admiral1967@mail.ru