@article {4642,
	title = {Cortical components of the Westheimer function},
	journal = {Vision Research},
	year = {1997},
	pages = {2535-2544},
	doi = {10.1016/S0042-6989(97)00060-6},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/9373685},
	author = {C. Yu and Dennis M. Levi}
}
