@book {Venables2002Springer,
	title = {{Modern applied statistics with S}},
	year = {2002},
	pages = {481},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	edition = {4th},
	address = {New York},
	author = {Venables, W.~N. and Ripley, B.~D.}
}