1. T. Wildi, Electrical Machines, Drives and Power Systems, 6th edn. (Pearson Education International, Upper Saddle River, 2006)
2. M.A. Salam, Fundamentals of Electrical Machines, 2nd edn. (Alpha Science, International Ltd., Oxford, 2012)
3. S.J. Chapman, Electric Machinery and Power System Fundamentals (McGraw-Hill Higher Education, New York, 2002)
4. A.E. Fitzgerald, C. Kingsley Jr., S.D. Umans, Electric Machinery, 6th edn (McGraw-Hill Higher Education, New York, 2003)