1. 2. Vilnina A.V., Vilnin A.D., Efremov E.V. Modern methods and means for level measurement in the chemical industry. Publishing house of Tomsk Polytechnic University. 2011. 84 p. (Rus)
2. 3. Karandeev K.B., Grinevich F.B., Novik A.I. Capacitive self-compensated level indicators. Moscwa, Leningrad: Energiya, 1966. 135 p. (Rus)
3. 4. Fraden. Modern sensors. Moskva: Tekhnosfera. 2006. 588 p. (Rus)
4. 5. Khansuvarov K.I., Tseytlin V.G. Technique of measuring pressure, flow, level of liquids, gas and steam. Moskva: Izdatelstvo standartov, 1990. 287 p.
5. 6. Brindley K. Sensors and Transducers. Moscwa: Energoatomizdat, 1991. 144 p. (Rus)