Iwasaki, Masao, and Benedicto Wlademir de Martin. “Positive Cistography in Dogs. II. Frequency of the Urinary Bladder Alterations”. Brazilian Journal of Veterinary Research and Animal Science, vol. 29, no. 2, Dec. 1992, pp. 297-01, https://doi.org/10.11606/issn.1678-4456.bjvras.1992.51996.