1. Endoscopic retrograde cholangiopancreatography (ERCP) in patients with Billroth-II partial gastrectomies;J, I.Osnes M.Myren;Endoscopy,1975
2. Is ERCP a reasonable diagnostic method for excluding pancreatic and hepatobiliary disease in patients with a BillrothII resection?;Thon, J.-J.; L-ffler, A.; Buess, G.; Gheorghiu, T.H.;Endoscopy,1983
3. Endoscopic sphincterotomy (EST) in patients with Billroth-1I gastrectomy;Rosseland, A.R.; Osnes, M.; Kruse, A.;Endoscopy,1981
4. Endoscopy';gastrectomy,1980
5. Fiberoptic endoscopy. Ulleval Hospital;Osnes, M.; Rosseland, A.R.