1. Size and number of gallstones in acute and chronic cholecystitis;Carveth,1959
2. The solitary gallstone;Mechling;Surg. Gynec. & Obst.,1950
3. Acute cholecystitis. Planned cholecystectomy at any time during the course of the disease;Pearce;J. Internat. Coll. Surgeons,1960
4. The treatment of acute cholecystitis, an evaluation;Zollinger;J. A. M. A.,1943
5. The surgical treatment of acute cholecystitis;Glenn;Surg. Gynec. & Obst.,1950