1. Ectopic ureterocele in infants and children;Ericsson;clinical study. Acta chir. scandinav.,1954
2. Ectopic ureterocele;Williams;Proc. Roy. Soc. M.,1958
3. Ureterocele: A study of 94 instances in 80 infants and children;Campbell;Surg. Gynec. & Obst.,1951
4. Ureterocele: A clinical study of nineteen cases;O’Conor;J. Urol.,1930
5. Ureterocele : A clinical study and a report of thirty-seven cases;Thompson;J. Urol.,1942