@book{51664,
	author = {Hoel, Paul G.,},
	title = {Introduction to mathematical statistics /},
	publisher = {Wiley & sons,},
	year = {1958 [printing 1961]},
	series = {Wiley publications in statistics},
	address = {New York  :},
	edition = {2nd ed.},
	note = {Includes Index.}
}