Shapovalov, Yuriy     The adequacy of analysis of linear periodically-time-variable circuits by the frequency symbolic method in the time domain [Текст] / Yuriy Shapovalov, Bohdan Mandziy, Dariya Bachyk, Marian Turyk // Modern problems of radio engineering, telecommunications and computer science (TCSET'2016) : proc. of the XIII Intern. conf., febr., 23-26, 2016, Lviv-Slavske, Ukraine / Min. of Education and Science of Ukrainiane, Lviv Polytechn. Nat. Univ. — Львів : Вид-во Львів. політехніки, 2016. — P. 25-29.