Galvão, Simone Rezende, et al. “Morphological, Morphometric and Histochemical Aspects of the Labial Salivary Glands of Dogs”. Semina: Ciências Agrárias, vol. 37, no. 5, Oct. 2016, pp. 3079-86, doi:10.5433/1679-0359.2016v37n5p3079.