1. RIBEIRO B.F., COTTON P.B., DILAWARI J.B., ROBERTS M., LAURENCE B.—Duodenoscopic manometry of the bile duct and sphincter of Oddi.Gut, 1977,18, 407.
2. SHAFFER R.D., HOGAN W.J., GEENEN J.E., DODDS W.J., STEWART E.T., ARNDORFER R.C.—Sphincter of Oddi motor activity: demonstration of unique high pressure phasic contractions.Gastroenterology, 1977,72, 1130.
3. FUNCH-JENSEN P., CSENDES A., KRUSE A., ØSTER M.J., AMDRUP E.—Common bile duct and Oddi sphincter pressure before and after endoscopic papillotomy in patients with common bile duct stones.Ann. Surg., 1979,190, 176–178.
4. CSENDES A., KRUSE A., FUNCH-JENSEN P., ØSTER M.J., ØRNSHOLT J., AMDRUP E.—Pressure measurements in the biliary and pancreatic duct system in controls and in patients with gallstones, prevous cholecystectomy or common bile duct stones.Gastroenterology, 1979,77, 1203–1210.
5. GEENEN J.E., HOGAN W.J.—Endoscopic access to the papilla of Vater.Endoscopy, 1980,12, 47–56.