@article {7209,
	title = {Comments on the manhattan stratigraphic measure},
	journal = {Cladistics},
	volume = {17},
	year = {2001},
	note = {PDF},
	pages = {285-289},
	keywords = {fossil record, phylogenetics, stratigraphy},
	author = {Pol, Diego and Norell, Mark A.}
}
