@book{4493,
	author = {Feller, William,},
	title = {An introduction to probability theory and its applications.},
	publisher = {Wiley},
	year = {[1957-77]},
	series = {A Wiley publication in mathematical statistics},
	address = {New York,},
	edition = {2d ed.},
	url = {http://www.loc.gov/catdir/toc/onix01/57010805.html}
}