@article {BertelliEtAl2005,
	title = {A phylogeny of extant penguins ({Aves: Sphenisciformes}) combining morphology and mitochondrial sequences},
	journal = {Cladistics},
	volume = {21},
	number = {3},
	year = {2005},
	pages = {209-239},
	author = {Bertelli,Sara and Giannini, Norberto P.}
}
