Єрохін, В. Ф., and Є. В. Пелешок. “Mathematical Model сoherent Demodulation of Synchronous Mutually Nonorthogonal Digital Signals With Minimum Frequency-Shift Keying”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 64 (March 30, 2016): 41-50. Accessed December 9, 2021. http://radap.kpi.ua/radiotechnique/article/view/1168.