1. Ivy, A. C.: The physiology of the gall bladder. Physiol. Rev., 14:1, 1934.
2. Snape, W. J.: Studies on the gall bladder in unanesthetized dogs, before and after vagotomy. Gastroenterology. 10:129, 1948.
3. Russell, T. H., Carter, R. F. and Oppenhein, E.: Gall bladder disease: Etiology, diagnosis, and treatment. Bull. of N. Y. Acad. of Med., 19:77, 1943.
4. Lyon, B. B. V.: Non-surgical drainage of the gall tract. Lea and Febiger Philadelphia, 1923.
5. Lyon, B. B. V.: Duodenal tube drainage of biliary system. The Cyclopedia of Medicine, Surgery and Specialties. F. A. Davis Co. Philadelphia, Pa. V. 9, 1939.