[1]
Emadi, A. (2004) Energy-Efficient Electric Motors, Third Edition, Revised and Expanded. Illinois Institute of Technology, Chicago.
[2]
Krause, P.C., Wasynczuk, O. and Sudhoff, S.D. (2002) Analysis of Electric Machinery and Drive Systems. Wiley IEEE Press.
http://dx.doi.org/10.1109/9780470544167
[3]
Meshkov, A. and Suzdorf, D. (2010) Improving the Energy Efficiency Factor of Low Power Electric Drives.
http://www.rusnauka.com