Шаповалов ЮІ, Мандзій БА, Бачик ДР. About the accuracy of assessment of stability of linear periodically time-variable circuits by the frequency symbolic method. RADAP [Internet]. 2015Jun.30 [cited 2024May1];0(61):13-22. Available from: https://radap.kpi.ua/radiotechnique/article/view/1068