@article {7813,
	title = {Optimization alignment: the end of multiple sequence alignment in phylogenetics?},
	journal = {Cladistics},
	number = {12},
	year = {1996},
	note = {PDF},
	pages = {1-9},
	keywords = {alignment, direct optimization, optimization, poy},
	author = {Wheeler, Ward C.}
}
@article {7819,
	title = {Implied alignment: a synapomorphy-based multiple-sequence alignment method and its use in cladogram search},
	journal = {Cladistics},
	volume = {19},
	year = {2003},
	note = {PDF},
	pages = {261-268},
	keywords = {alignment, direct optimization, implied alignment, phylogenetics, poy},
	author = {Wheeler, Ward C.}
}
@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.}
}
