@article {6498,
	title = {A framework for the quantitative study of evolutionary trees},
	journal = {Systematic Zoology},
	volume = {38},
	number = {4},
	year = {1989},
	note = {PDF},
	pages = {297-309},
	keywords = {long-branch attraction, ML, parsimony, phylogenetics},
	author = {Hendy, Michael D. and Penny, David}
}
