@book{51620,
	author = {De Valois, Russell L. and De Valois, Karen K. and ebrary, Inc.},
	title = {Spatial vision},
	publisher = {Oxford University Press,},
	year = {1990.},
	series = {Oxford psychology series ;},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10087113}
}