[Ackerman, T. (2005). Wind Power in Power Systems. Stockholm: John Wiley & Sons Ltd, 691 p.10.1002/0470012684]Search in Google Scholar
[Diļevs, G., Levin, N., Pugachev, V., & Ribickis, L. (2009). Divpusējās barošanas asinhronais generators (Publ. 2009.08.20) Patenti un preču zīmes, (8), p.1103.]Search in Google Scholar
[Левин, Н., & Серебряков, А. (1976). Электропривод на базе двигателей со взаимно-неподвижными обмотками. Электрические машиы и приводы,Вып. 3, Рига.]Search in Google Scholar
[Dilevs, G., Levin, N., & Pugachev, V. (2007). Daudzpolu asinhronie vēja generatori. Latv. J. Phys. Tech. Sci., (5), 15-22.]Search in Google Scholar
[Dilevs, G., & Jakobsons, E. (2008). The power control of the multipole double fed induction wind generator. RTU Sci. Proceedings. Part 4: Power and electrical engineering, 23, Riga: RTU, 111-116.]Search in Google Scholar
[Pugachev, V., Levin, N., Ribickis, L., & Manonov, M. (2003). A multipolar inductor generator of annular design for windmills. Energētika un elektrotehnika, 4(10), Riga: RTU Zinātniskie raksti, 10-15.]Search in Google Scholar
[Волдек, А. (1974). Электрические машины. Москва: Энергия.]Search in Google Scholar
[Gieras, J. F., & Wing, M. (2002). Permanent Magnet Motor Technology. Design and Application (2nd ed-n, revised and expanded). London: UK BT Cellnet, 590 p.]Search in Google Scholar
[Levins, N., Kamoliņš, E., & Vītoliņa, S. (2011). Bezkontaktu Elektriskās Mašīnas. Rīga: RTU, 275 lpp.]Search in Google Scholar