@inbook {7816,
	title = {Homology and DNA sequence data},
	booktitle = {The character concept in evolutionary biology},
	year = {2001},
	note = {PDF},
	pages = {303-317},
	publisher = {Academic Press},
	organization = {Academic Press},
	address = {San Diego},
	keywords = {direct optimization, dynamic homology, homology, molecular characters, poy},
	author = {Wheeler, Ward C.},
	editor = {Wagner, G. P.}
}
@article {6589,
	title = {Efficiency of parallel direct optimization},
	journal = {Cladistics},
	volume = {17},
	year = {2001},
	note = {PDF},
	pages = {S71-S82},
	keywords = {direct optimization, phylogenetics, poy},
	author = {Janies, Daniel A. and Wheeler, Ward C.}
}
