@book{117900,
	author = {Matloff, Norman S. and ebrary, Inc.},
	title = {The art of R programming},
	publisher = {No Starch Press,},
	year = {2011.},
	address = {San Francisco :},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10513550}
}