1. Cholelithiasis and choledocholelithiasis: Factors that influence relative incidence;Appleman;Mayo Clin. Proc.,1964
2. Operative choledochoscopy using an experimental choledochoscope;Ashby;Gut,1976
3. The problem of common duct exploration at the time of cholecystectomy;Baker;West. J. Surg.,1951
4. Die choledochopapilloskopie, nebst Bemerkungen uber Hepaticusdrainage und Dilatation der Papille;Bakes;Arch. Klin. Chir.,1923
5. The present position concerning gallstone dissolution;Bell;Gut,1974