@book{36252,
	author = {Bergen, Arthur R.},
	title = {Power systems analysis /},
	publisher = {Prentice-Hall },
	year = {c1986.},
	series = {Prentice-Hall series in electrical and computer engineering.},
	address = {Englewood Cliffs, N.J. },
	note = {Bibliografia: p. 521.}
}