1. Dimensions of the normal ureter in infancy and childhood;Cussen;Invest. Urol.,1967
2. The radiologic and cystoscopic classification of vesicoureteral reflux;Heale;Brit. J. Urol.,1975
3. The Ureterovesical Junction;Hutch,1968
4. Bifid ureters: an anatomical, physiological, and clinical study;Lenaghan;J. Urol.,1962
5. The ureteral orifice, its configuration and competency;Lyon;J. Urol.,1969