Nagrath IJ, Kothari D P, . (1990). Modern Power System Analysis. New Delhi: TATA MC GRAW HILL.
Nagrath IJ, Kothari D P, . 1990. Modern Power System Analysis. New Delhi: TATA MC GRAW HILL.
Nagrath IJ, Kothari D P, . Modern Power System Analysis. New Delhi: TATA MC GRAW HILL. 1990.