Nagrath I, Kothari D, . (2010). Electric Machines 4th ed. New Delhi: Mc Graw Hill Education (India) Private Limited.
Nagrath I, Kothari D, . 2010. Electric Machines 4th ed. New Delhi: Mc Graw Hill Education (India) Private Limited.
Nagrath I, Kothari D, . Electric Machines 4th ed. New Delhi: Mc Graw Hill Education (India) Private Limited. 2010.