@book{33297,
	author = {Salomaa, Arto. and ebrary, Inc.},
	title = {A half-century of automata theory},
	publisher = {World Scientific,},
	year = {c2001.},
	address = {River Edge, N.J. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10255940}
}