1. Pigmentation characters: an exemple of Sankoff characters from tinamous phylogeny;Bertelli;Ornitol. Neotrop.,2004
2. Earliest tinamous (Aves: Palaeognathae) from the Miocene of Argentina and their phylogenetic position;Bertelli;Contr. Sci.,2005
3. A phylogeny of extant penguins (Aves: Sphenisciformes) combining morphology and mitochondrial sequences;Bertelli;Cladistics,2005
4. On the use of intergumentary characters in bird phylogeny: the case of Tinamus osgoodi (Palaeognathae: Tinamidae) and plumage character coding;Bertelli;Acta Zool. Lilloana,2013