Nagrath IJ, Kothari DP, . (1994). Modern Power System Analysis. New Delhi: TATA MC GRAW HILL.
Nagrath IJ, Kothari DP, . 1994. Modern Power System Analysis. New Delhi: TATA MC GRAW HILL.
Nagrath IJ, Kothari DP, . Modern Power System Analysis. New Delhi: TATA MC GRAW HILL. 1994.