@book{8418,
	author = {Serfling, Robert J.},
	title = {Approximation theorems of mathematical statistics /},
	publisher = {Wiley,},
	year = {c1980.},
	series = {Wiley series in probability and mathematical statistics},
	address = {New York :},
	url = {http://www.loc.gov/catdir/description/wiley032/80013493.html}
}