Faure, E. V., V. V. Shvydkyi, A. O. Lavdanskyi, and O. O. Kharin. “METHODS OF FACTORIAL CODING OF SPEECH SIGNALS”. Radio Electronics, Computer Science, Control, no. 4 (November 25, 2019): 186–198. Accessed May 2, 2024. http://ric.zntu.edu.ua/article/view/193946.