1. Toroptsev, N.D., Aviatsionnye asinkhronnye generatory (Aviation Induction Generators), Moscow: Transport, 1970.
2. Gruzov, L.N., Metody matematicheskogo issledovaniya elektricheskikh mashin (Mathematical Methods for Researching Electrical Machines), Moscow-Leningrad: Gosenergoizdat, 1953.
3. Pontryagin, L.S., Obyknovennye differentsial’nye uravneniya (Ordinary Differential Equations), Moscow: Nauka, 1965.
4. Besekerskii, V.A. and Popov, E.P., Teoriya sistem avtomaticheskogo regulirovaniya (The Theory of Automated Control Systems), Moscow: Nauka, 1972.