1. ABRANIN , E. P. , and BRUCK , YU. M. 1985 , Circuits of broadband amplifiers with lossless feedback and high dynamic range . Radioastronomic equipment. Proceedings of the XVllth All-Union Conference on Radio Astronomy. Erevan , pp. 294 – 295 ( in Russian; 1987, Highly linear broadband feedback amplifiers. Informsvyaz deposition. No. 979–C8, p. 33 (in Russian), also asRadiotekhnika, 42, 31–32 .
2. BOGDANOVICH , B. M. 1984 , Receiving devices with high dynamic range ( Moscow Radio i Svyaz ), p. 176 (in Russian ).