@book{355816,
	author = {Hewitson, Les. and Brown, Mark. and ebrary, Inc.},
	title = {Practical power system protection},
	publisher = {Elsevier /Newnes,},
	year = {c2004.},
	address = {Oxford ;},
	edition = {4th ed.},
	note = {Includes index.},
	url = {http://www.columbia.edu/cgi-bin/cul/resolve?clio7697582}
}