1. Batson, M. C., Ross, P. E., Murison, J. and Bouchier, I. A. D. 1978. Comparison of fixed doses of chenodeoxycholic acid for gallstone dissolution. Lancet i., 111.
2. Bell, G. D. 1979. Medical treatment of gallstones. J. Royal Coll. Phys. 13, 47.
3. Britton, D. C., Gill, B. S., Taylor, R. M. R. and James, O. 1975. The removal of retained gallstones from the common bile duct: experience with sodium cholate infusion and the Burhenne catheter. Brit. J. Surg. 62, 520.
4. Burhenne, H. J. 1973. Non-operative retained bilary tract stone extraction: a new roentgenologic technique. Amer. J. Roentgen. Rad. Ther. Nuc. Med. 117, 388.
5. Christiansen, L. A., Schersten, T., Burcharth, F., Bruusgaards, A., Limblad, L. and Cahlin, E. 1977. The treatment of relained bile duct calculi with T-tube infusions of sodium cholate and heparin. Gastroenterology. 12, 337.