Мрачковський, О.Д., В.Є. Бичков, and Турко C.І. “Research of Ambiguity Function of D-Codes of Welti”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 41 (October 11, 2010): 39-42. Accessed January 27, 2022. http://radap.kpi.ua/radiotechnique/article/view/208.