@book{172134,
	author = {Guile, A. E. and Paterson, W.},
	title = {Electrical power systems},
	publisher = {Pergamon Press,},
	year = {1977.},
	series = {Pergamon international library of science. technology, engineering, and social studies},
	address = {Oxford, England :},
	edition = {2a ed.}
}