@article {7878,
	title = {Estimation of the transition/transversion rate bias and species sampling},
	journal = {Journal of Molecular Evolution},
	volume = {48},
	year = {1999},
	note = {PDF},
	pages = {274{\textendash}283},
	keywords = {bias, molecular characters, saturation, transition/transversion ratio},
	author = {Yang, Z. and Yoder, A. D.}
}
