1. Variations in the number and arrangement of the renal vessels;Anson;J Urol,1936
2. Anomalies of the kidney and ureteropelvic junction;Bauer,1998
3. Kidney and ureter;Parrott,1994
4. Surgical anatomy of the retroperitoneum, kidneys, and ureters;Kabalin,1998
5. The urogenital system;Moore,1993