Petre Tzv. Petrov - is a MScSEE (1981), MScApplMath (1982), SSELT (1996). He has worked as researcher and assistant professor in Technical University of Sofia (Bulgaria) and lecturer and expert lecturer in Kingdom of Morocco. Now he is working as test engineer in private sector. E-mails: ptzvp1@yahoo.fr and ppetre@hotmail.bg

В.Л. Стефанюк - д.т.н., профессор, Институт проблем передачи информации РАН (Москва). E-mail: stefanuk@iitp.ru