Frolkin V. I, Popov L. N & Tr. By Kuznetsov B. V.Pulse circuits. Moscow: .
Frolkin V. I, Popov L. N and Tr. By Kuznetsov B. V.Pulse circuits. Moscow: .
Frolkin V. I, Popov L. N and Tr. By Kuznetsov B. V.Moscow: . .