@book{68199,
	author = {Cotton, H},
	title = {Alternating current machines /},
	publisher = {Macmillan, },
	year = {1960},
	series = { Cleaver-Hume electrical series, no. 4},
	address = { London :},
	edition = {2nd ed.},
	note = {Includes indexes},
	url = { no. 4}
}