Sakovych, L., V. Pavlov, S. Liventsev, S. Hnatiuk, and Y. Nebesna. “Сomparative Analysis of Reliability Models of Software for Special Communication Equipment”. Collection "Information Technology and Security", vol. 1, no. 2, Dec. 2012, pp. 61-70, doi:10.20535/2411-1031.2012.1.2.54994.