@book{221907,
	author = {Rudnick, Joseph Alan, and Gaspari, George David. and ebrary, Inc.},
	title = {Elements of the random walk},
	publisher = {Cambridge University Press,},
	year = {2004.},
	address = {Cambridge ;},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10124710}
}