@book{144528,
	author = {Ionin, Yury J. and Shrikhande, Mohan S., and ebrary, Inc.},
	title = {Combinatorics of symmetric designs},
	publisher = {Cambridge University Press,},
	year = {2006.},
	series = {New mathematical monographs ;},
	address = {Cambridge, UK ;},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10130390}
}