1. Kourias BG, Chouliares A. Spontaneous gastrointestinal biliary fistula complicating duodenal ulcer. Surg Gynecol Obstet 1964; 119: 1013–1018.
2. Michowitz M, Farago C, Lazaoovici I, Solowiejczyk M. Choledochoduodenal fistula: a rare complication of duodenal ulcer. Am J Gastroenterol 1984; 79: 416–420.
3. Kyle J. Choledochoduodenal fistula due to duodenal ulceration. Br J Surg 1958; 46: 124–127.
4. Cornet L, Angate Y, Kekeh JK. Les fistulas choledochoduodenules. d’ origine ulcereuse. Chirurgie 1971; 97: 570–580.
5. McEwan Alvarado G, Dysart DN. Choledochoduodenal fistulas complicating duodenal ulcer. Am J Dig Dis 1967; 12: 947–954.