1. Herman JR. Urology: A View Through the Retrospectroscope. Harper & Row, Hagerstown, MD, 1973.
2. Mack T. The double-J: Then and now. In: Stenting the Urinary System, (Yachia D, ed.). ISIS Medical Media, Oxford, England; Mosby Year Book, St. Louis, MO, 1998, pp. 102–106.
3. Herdman JP. Polyethylene tubing in the experimental surgery of the ureter. Br J Surg 1949; 37: 105–106.
4. Ulm AH, Lo MC. Total bilateral polyvinyl ureteral substitutes in the dog. J Urol 1959; 83: 575–582.
5. Tullochc WS. Restoration of continuity of the ureter by means of a polyethylene tubing. Br JUrol 1952; 24: 42–45.