[1. Dirba, J., Ketner, K., Levin, N., & Pugachev, V. (2002). Electrical Machines inTransport. Riga: Jumava, pp. 344 (in Latvian).]Search in Google Scholar
[2. Zezirin, R. (1961). Inductor generators. Moscow: GEI (in Russian).]Search in Google Scholar
[3. Levin, N., Kamolins, E., & Vitolina, S. (2011). Brushless Electrical Machines. Riga: RTU, pp. 275 (in Latvian).]Search in Google Scholar
[4. Orlova, S., Pugachev, V., Levin, N., & Kamolins, E. (2009). Rational geometry of a magnetic circuit of an axial inductor generator. Proceedings of the 4th Intern. Conf. onElectrical and Control Technologies. Kaunas (Lithuania), pp. 219-222.]Search in Google Scholar
[5. Dirba, J., Ketner, K., Orlova, S., Levin, N., & Pugachev, V. (20.11.2009). Inductancemachine with axial excitation. Patent LV Nr. 13971 B.]Search in Google Scholar
[6. Levin, N., Kamolins, E., Pugachev, V. (02.04.2012). The Electrical Equipment forSupplying the Railway Passenger Cars with Electric Energy. LV Patent No. 14534B.]Search in Google Scholar