ArduiniM.: Malformazioni uretrali. Relaz. utticiale XXIV Congr. Soc. It. Urol., Roma 1951.
2.
AthertonL., AthertonL., DouglasSexter M.: A method of correcting double urethra in a man. J. Urol., 98; 99 (1967).
3.
BoissonatP.: Cinq cas de canaux uréthraux accessoires, suivis d'un essai de classification anatomique de ces conduits surnumeraires. J. d'Urol., 60; 954–962 (1954).
4.
Boretti: citato da Arduini.
5.
ChatelainC., BoureauM., van KoteC., WeisgerbfrG.: Bifidités uréthrales à abouchement préanal. J. d'Urol., 79; 648–651 (1973).
6.
ChiaudanoC.: Dotto parauretrale dell'uretra posteriore, con dilatazione cistica. Arch. it. Chir., 13; 275 (1925).
7.
Escat: Malformations congénitales et acquises de l'urèthre. Ann. Maladies et Organes génito-urinaires, Vol. I, 1908.
8.
KaranjavalaD. K.: An unusual case of complete reduplication of the urethra. Australian & New Zealand J. Surg., 39; 284–286 (1970).
9.
MoggR. A.: Congenital anomalies of the urethra. Brit. J. Urol., 40; 638–648 (1968).
10.
MueckeE. C.: The role of the cloacal membrane in extrophy: the first successful experimental study. J. Urol., 92; 659–667 (1964).
11.
ScottW. W.: Two unusual urethroplasties. Amer. Surgeon, 26; 196–203 (1960).
12.
SelvaggiF. P., GoodwinW. E.: Incomplete duplication of the male urethra. Brit. J. Urol., 44; 495–498 (1972).
13.
TaruffiC.: Sui canali del pene. Boll. Scienze med. Bologna, 2; 375 (1891).
14.
WilliamsD. I., KenawiM. M.: Urethral duplication in the male. Eur. Urol., 1; 209–215 (1975).
15.
WilliamsD. I., BloombergS.: Bifid urethra with pre-anal accessory track (Y duplication). Brit. J. Urol., 47; 877–882 (1976).