Iwasaki, Masao. “Positive Cistography in Dogs. I. Technics and Anatomo-Radiographics Aspects”. Brazilian Journal of Veterinary Research and Animal Science 29, no. 2 (December 2, 1992): 289-295. Accessed December 6, 2023. https://www.revistas.usp.br/bjvras/article/view/51995.