1. ERCP Progress report;Cotton, P.B.;Gut,1977
2. Advances in the management of bile duct obstruction;Zimmon, D.S.; Chang, J.; Clemett, A.R.;Med Clin North Am,1979
3. Transnasal bile duct catheterisation after endoscopic sphincterotomy;Cotton, P.B.; Burney, P.G.J.; Mason, R.R.;Gut,1979
4. Experiences with the long standing nasobiliary tube in biliary diseases;Wurbs, D.; Phillip, J.; Classen, M.;Endoscopy,1980
5. Palliative bile duct drainage. A new endoscopic method of introducing a transpapillary drain;Soehendra, N.; Reijnders-Frederix, V.;Endoscopy,1980