@book {6842,
	title = {MacClade. Version 4.07},
	year = {2005},
	publisher = {Sinauer Associates},
	organization = {Sinauer Associates},
	address = {Sunderland, MA},
	author = {Maddison, David R. and Maddison, Wayne P.}
}
@article {6843,
	title = {NEXUS: an extensible file format for systematic information},
	journal = {Systematic Biology},
	volume = {46},
	year = {1997},
	note = {PDF},
	pages = {590{\textendash}621},
	keywords = {phylogenetics},
	author = {Maddison, David R. and Swofford, D. L. and Maddison, Wayne P.}
}
