@article {507061,
	title = {Estimating Selection Pressures from Limited Comparative Data},
	journal = {Molecular Biology and Evolution},
	volume = {23},
	year = {2006},
	pages = {1457-1459},
	url = {http://www.oeb.harvard.edu/faculty/desai/PDFs/plotkinsdushoffdesaifraser06a.pdf},
	author = {Plotkin, JB and Dushoff, J and Desai, MM and Fraser, HB}
}
