@article {4658,
	title = {Stimulus coding rules for perceptual learning},
	journal = {PLoS Biology},
	year = {2008},
	pages = {1651-1660},
	doi = {10.1371/journal.pbio.0060197},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/18707195},
	author = {Jun-Yun Zhang and Shu-Guang Kuai and Lu-Qi Xiao and Stanley A. Klein and Dennis M. Levi and Cong Yu}
}
