Molecular phylogeny an advanced snakes (Serpentes, Caenophidia) with emphasis on South American Xenodontines: a revised classification and descriptions of new taxa - Zaher, Hussam El Dine; Grazziotin, Felipe Gobbi; Cadle, John E.; Murphy, Robert W.; Moura-Leite, Julio Cesar; Bonatto, Sandro L. (Papéis Avulsos de Zoologia, 2009)