Esteves, Alessandra, et al. “Comparative Analisys of Neuron Densities in Cortical Areas of Different Dogs Breed”. Brazilian Journal of Veterinary Research and Animal Science, vol. 45, no. 3, June 2008, pp. 231-8, https://doi.org/10.11606/issn.1678-4456.bjvras.2008.26701.