1. EPT-10 years on. Proceedings International conference Erlangen 1983;Classen, M.; Demling, L.
2. Choledocho-lithiasis - surgical or endoscopic lithotomy;Tweedle, D.E.F.; Martin, D.F.;[Abstract] Gut,1981
3. Endoscopic papillotomy in the treatment of biliary tract disease; 258 procedures and results;Siegel, J.H.;Dig Dis Sci,1981
4. Endoscopic treatment of biliary tract disease;Safrany, L.;Lancet; Schaffner 0,1978
5. Resume of a seminar on endoscopic retrograde sphincterotomy (ERS);Geenen, J.E.; Vennes, J.A.; Silvis, S.E.;Gastrointest Endosc,1981