1. Krause PC (1986) Analysis of electric machinery. Mc-Graw Hill, New York
2. Sen PC (1989) Principles of electric machines and power electronics. Willey, New York
3. Say MG (2002) The performance and design of alternating current machines. M/S Pitman, London. ISBN 81-239-1027-4
4. Kothari DP, Nagrath IJ (2010) Electric machines. Tata McGraw Hill Education Pvt. Ltd., New Delhi. ISBN-13 978-0-07-069967-0
5. Motor Reliability Working Group (1985) Report of large motor reliability survey of industrial and commercial installations Part I, and II. IEEE Trans Ind Appl IA-21(4):853–872