1. Duplication of the cystic and common hepatic ducts, lined with gastric mucosa;Lee;N Engl J Med,1957
2. Heterotopic gastric mucosa in the wall of the cystic duct: report of a case;Whittaker;Surgery,1967
3. Heterotopic gastric mucosa in the common bile duct;Welling;Arch Surg,1970
4. Duplications of the alimentary tract: report of three unusual cases associated with bile and pancreatic ducts;Akers;Surgery,1972
5. Heterotopic gastric tissue of the bile duct;Kalman;Surgery,1981