@book{1075,
	author = {Kothari, D. P. and Nagrath, I. J.},
	title = {Modern power system analysis },
	publisher = {Tata McGraw-Hill Higher Education,},
	year = {2008.},
	address = {New Delhi:},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0668/2006041933-d.html}
}