Silva, Monique Rodrigues Cesario, Franklin de Almeida Sterman, and Adriana Helena de Almeida. 2007. “Ultrasonographic Mensuration of Head Dimentions in Boxers Normal Gestations and Its Correlation With the Gestationalage”. Brazilian Journal of Veterinary Research and Animal Science 44 (supl.): 25-29. https://doi.org/10.11606/issn.1678-4456.bjvras.2007.26586.