@book{148609,
	author = {Holt, Derek F. and Plesken, Wilhelm.},
	title = {Perfect groups /},
	publisher = {Clarendon Press,},
	year = {1989.},
	address = {Oxford :},
	note = {"Supplement to Perfect groups by D. Holt and W. Plesken" 2 microfiches inserted.}
}