1. Cannulation of papilla of Vater via fiber-duodenoscope;Cotton, P.B.; Salmon, P.R.; Blumgart, L.H.; Burwood, R.J.; Davies, G.T.; Lawrie, B.W.; Pierce, J.W.; Read, A.E.;Lancet,1972
2. Endoscopic observation of the duodenum and pancreatocholedochography, using duodenal fibrescope under direct vision;Ogoshi, K.; Tobita, Y.; Hara, Y.;(Translation). Gastroent. Endosc. (Tokyo),1970
3. Endoscopic pancreato-cholangiography;Oi, I.; Kobayashi, S.; Kondo, T.;Endoscopy,1970
4. Retrograde pancreatography and cholangiography by fiberduodenoscope;Takagi, K.; Ikeda, S.; Nakagawa;Gastroenterology,1970
5. Fibreoptic instruments for gastrointestinal endoscopy;Cotton, P.B.; Williams, C.B.,1972