C. R. de O. Lima, “Morphological patterns and malignancy criteria of transmissible venereal tumor in cytopathological and histopathological exams”, Braz. J. Vet. Res. Anim. Sci., vol. 50, no. 3, pp. 238–246, Jun. 2013, doi: 10.11606/issn.1678-4456.v50i3p238-246.