@book{5569,
	author = {Hoel, Paul G.},
	title = {Introduction to mathematical statistics /},
	publisher = {Wiley,},
	year = {1984.},
	address = {[S.l.] :},
	edition = {5th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471890456/chopaconline-20}
}