@article {921316,
	title = {Estimating species phylogenies using coalescence times among sequences},
	journal = {Systematic Biology},
	volume = {58},
	number = {5},
	year = {2009},
	pages = {468-477},
	isbn = {1063-5157},
	author = {Liu, Liang and Yu, Lili and Pearl, Dennis K and Edwards, Scott V.}
}
