Higa, A., E. Hingst-Zaher, and M. Vivo. “Size and Shape Variability in the Skull of <i>Pontoporia blainvillei</I> (Cetacea: Pontoporiidae) from the Brazilian Coast”. Latin American Journal of Aquatic Mammals, vol. 1, no. 1, July 2002, pp. 145-52, doi:10.5597/lajam00018.