I.N. Sinitsyn1, V.I. Sinitsyn2, E.R. Korepanov3, T.D. Konashenkova4

1−4 FRC CSC RAS (Moscow, Russia)
 1 sinitsin@dol.ru, 2 vsinitsin@ipiran.ru, 3 ekorepanov@ipiran.ru, 4 tkonashenkova64@mail.ru