@article {Hatfield:November 2003:0001-6918:355,
	author = "Hatfield G.",
	title = "Representation and constraints: the inverse problem and the structure of visual space",
	journal = "Acta Psychologica",
	volume = "114",
	year = "November 2003",
	abstract = "",
	pages = "355-378(24)",
	url = "http://www.ingentaconnect.com/content/els/00016918/2003/00000114/00000003/art00095"
	doi = "doi:10.1016/j.actpsy.2003.07.003	"
}