Secrecy of communications in data transmission by impulses with unknown moments of appearance and disappearance / O. V. Chernoyarov, M. M. Shahmoradian, M. Marcokova, Y. E. Korchagin // International journal of engineering. Transactions A : Basics. 2019. Vol. 32, № 4. P. 548-554. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000707454