1. Keibel, F. and Mall, F. P.: Development of the urinogenital organs. Human Embryology, vol. 2.
2. Ureterocele;Wilenius;Ann. chir. et gynaec. Fenninae,1950
3. Ureterocele;Thompson;J. Urol.,1942
4. Ureterocele;Campbell;Surg., Gynec. & Obst.,1951
5. Ureterocele with prolapse through the urethra;Emmett;J. Urol.,1944