Feijóo, Gimena, et al. “Lung Lesions of Non-Vaccinated Puppies Affected by Canine Distemper Virus”. Brazilian Journal of Veterinary Pathology, vol. 12, no. 3, Nov. 2019, pp. 83-87, https://doi.org/10.24070/bjvp.1983-0246.v12i3p83-87.