@article {7876,
	title = {On the best evolutionary rate for phylogenetic analysis},
	journal = {Systematic Biology},
	volume = {47},
	number = {1},
	year = {1998},
	note = {PDF},
	pages = {125-133},
	keywords = {molecular characters, phylogenetics, rates, substitution rates},
	author = {Yang, Ziheng}
}
