1. Effects of female sex hormones in young opossums.;Burns;Proceedings of the Society for Experimented Biology and Meidicine,1939
2. Gray's Anatomy (1967). ed. Davies, D. V., and Coupland, R. E., 34th ed., p. 1550. London: Longmans.
3. Die Cystitis trigoni der Frau.;Heymann;Zentralblatt fur die Krankheiten der Harn-und Sexualorgane,1906
4. Physiologic chages occurring in the urinay tract during pregnancy.;Hundley;American Journal of Obstertics and Gynecology,1935