HAFFER, Jürgen. On the dispersal of highland birds in tropical South and Central America. El Hornero, Argentina, ARG, v. 10, n. 4, p. 436–438, 1967. DOI: 10.56178/eh.v10i4.1302. Disponível em: https://elhornero.avesargentinas.org.ar/home/article/view/1302.. Acesso em: 30 nov. 2025.