1. Congenital valvular obstruction of the prostatic urethra;Young;Surg., Gynec. & Obst.,1929
2. Congenital obstruction of the posterior urethra;Young;J. Urol.,1919
3. Urethral valve;Kjellberg,1957
4. Voiding cystourethrography in the diagnosis of congenital posterior urethral valves;Griesbach;Amer. J. Roentgen.,1959
5. The dilated posterior urethra. I. Male;Waterhouse;J. Urol.,1964