@book{14687,
	author = {Happ, H. H.},
	title = {Piecewise methods and applications to power systems /},
	publisher = {Krieger Pub Co,},
	year = {1980.},
	series = {Wiley services on systems engineering & analysis.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471351318/chopaconline-20}
}