@article {3179,
	title = {Ontogeny, phylogeny,paleontology, and the bigenetic law},
	journal = {Systematic Zoology},
	volume = {78},
	year = {1978},
	pages = {324-345},
	keywords = {ONTOGENY, PHYLOGENY},
	author = {Nelson, G.}
}
@article {3181,
	title = {Outgroups and ontogeny},
	journal = {Cladistics},
	volume = {1},
	year = {1985},
	pages = {29-45},
	keywords = {CLADISTICS, ONTOGENY, OUTGROUPS},
	author = {Nelson, G.}
}
