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2.Hezman, Stephen L.: Delmar's Standard Textbook of Electricity, 5. edition, 2011, ISBN-13:978-1-111-53915-3
3. Kocman, S.: Electrical Engineering in Mining, skriptum VŠB-TU Ostrava, 2004, ISBN 80-248-0804-8
4. Boldea, I., Nasar, S. A.: Electric Drives. CRC Press, London, New York, Washington D. S., 1999