Мрачковський, О., В. Бичков, and Турко C. “Research of Ambiguity Function of D-Codes of Welti”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 41, Oct. 2010, pp. 39-42, doi:10.20535/RADAP.2010.41.39-42.