1. Petrushin, A.D., Shcherbakov, V.G., and Kashuba, A.V., Optimization of magnetic system of valve–inductor electrical engine, Izv. Vyssh. Uchebn. Zaved., Elektromekh., 2017, no. 1, pp. 20–27.
2. Chair of electromechanics and electrical devices, Platov South–Russian State Polytechnic University (NPI). http://emf.npi–tu.ru/eiea/.
3. Petrushin, A.D., Kashuba, A.V., and Shevkunova, A.V., RF Inventor’s Certificate no. 2016618039, 2016.