@article {4643,
	title = {Spatial facilitation predicted with end-stopped spatial filters},
	journal = {Vision Research},
	year = {1997},
	pages = {3117-3127},
	doi = {10.1016/S0042-6989(97)00120-X},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/9463694},
	author = {Cong Yu and Dennis M. Levi}
}
