“Comparative Analysis of Potential Characteristics of 2nd Degree, 3d Degree and 4th Degree Frequency Modulated Probing Signals”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 53 (July 17, 2013): 98–103. Accessed April 3, 2025. https://radap.kpi.ua/radiotechnique/article/view/515.