@book{912,
	author = {Gupta, J. B.},
	title = {Elements of Power Systems /},
	publisher = {S K KATARIA & SONS,},
	year = {2010.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/9350140438/chopaconline-20}
}