Silva, M. R. C., Sterman, F. de A., & Almeida, A. H. de. (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