1. The pathological and anomalous conditions associated with duplication of the renal pelvis and ureter;Goyanna;J. Urol.,1945
2. Localized hydronephrosis masquerading as renal neoplasm;Bosniak;J. Urol.,1968
3. Non-opacified duplicated collecting systems simulating renal tumors in adults;Koehler;J. Can. Assoc. Radiol.,1968
4. Renal duplication with hydronephrotic segment;Gross;Am. J. Roentgenol. Radium Ther. Nucl. Med.,1967