1. Kryukov, O.V., Mikroprotsessornoe upravlenie mashinami dvoinogo pitaniya (Microprocessor Control of Doubly-Fed Machines), Nizhni Novgorod: Nizhni Novgorod. Gos. Tekh. Univ., 1999.
2. Kryukov, O.V. and Kiyanov, N.V., Elektrooborudovanie i avtomatizatsiya vodooborotnykh sistem predpriyatii s ventilyatornymi gradirnyami (Electrical Equipment and Automation of Water Circulation Systems of Plants with Mechanical-Draft Cooling Towers), Nizhni Novgorod: Nizhni Novgorod. Gos. Tekh. Univ., 2007.
3. Kryukov, O.V., Epishin, D.V., and Krylova M.V., RF Patent 30444, 2002.
4. Kryukov, O.V., Krasilnikov, S.I., and Zuikov, A.V., RF Patent 30443, 2002.