@book{109313,
	author = {Arasu, K. T., and ebrary, Inc.},
	title = {Groups, difference sets, and the monster},
	publisher = {Walter de Gruyter,},
	year = {1996.},
	series = {Ohio State University Mathematical Research Institute publications ;},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10597658}
}