1. R.I. Perets et al. Antennye perekluchateli. Moscow, Sovetskoe Radio, 1950 (in Russian).
2. A.F. Harwey. Microwave Engineering. London - NewYork, Academic Press, 1963.
3. R.A. Valitov et al. Tekhnika Submillimetrovych Voln. Moscow, Sovetskoe Radio, 1969 (in Russian).
4. A.Ya. Usikov et al. Electronika i Radiofizika Millimetrovykh i Submillimetrovykh Voln. Kiev, Naukova Dumka, 1986 (in Russian).
5. A.F. Harwey. Duplexing Systems of Microwave Frequencies. IRE Trans., 1960, v. MTT-8, №4, p.p.415–431.