1. Principles of Surgery;Schwartz,1989
2. Cloacal dysgenesis: related anomalies and pregnancies;Waters;Obst. Gynec.,1982
3. Urologic implications of anorectal malformations;Parott;Urol. Clin. N. Amer,1985
4. A review of caudal dysgenesis and its pathogenesis as illustrated in an animal model;Alles;Birth Defects,1993