@book{615075,
	author = {Nasar, S. A.},
	title = {Schaum's outline of theory and problems of electric power systems /},
	publisher = {McGraw-Hill,},
	year = {c1990.},
	series = {Schaum's outline series},
	address = {New York :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/mh022/89034889.html}
}