@book{495,
	author = {Kothari, D. P. and Nagrath, I. J.},
	title = {Modern power system analysis /},
	publisher = {McGraw-Hill Higher Education;},
	year = {2003[2008 reprinted].},
	series = {McGraw-Hill core concepts in electrical engineering series.},
	address = {Boston :},
	edition = {3rd ed.}
}