1. Burhenne, H.J.: Nonoperative retained biliary tract stone extraction: a new roentgenologic technique. Am. J. Roentgenol.117:388, 1973
2. Smith, S.W., Engel, C., Averbrook, B., Longmire, W.P., Jr.: Problem of retained and recurrent common bile duct stones. J.A.M.A.164:231, 1957
3. Mondet, A.: Técnica de la extracción incruenta de los cálculos en la litiasis residual del colédoco. Bol. Soc. Cir. Bs. Aires46:278, 1962
4. Mazzariello, R.: Removal of residual biliary tract calculi without reoperation. Surgery67:566, 1970
5. Lagrave, G., Plessis, J.L., Pougeard-Dulimbert, G., Passicos, J.: Lithiase biliaire résiduelle: extraction à la sonde de Dormia par le drain de Kehr. Mém. Acad. Chir. (Paris)95:431, 1969