1. Meeroff, J. C., Jorgens, J. and Isenberg, J. I. (1975). The effect of glucagon on barium enema examination.Radiology, 115, 5.
2. Unger, R. H. (1975). Action of glucagon as adjunct ta gastrointestinal X-ray film examination. J. Am. Med. Assoc., 231, 80.
3. Lin, T. M. (1975). Actions of gastrointestinal hormones and related peptides on the motor function of biliary tract. Gastroenterology, 69,1006.
4. Rey, J. F. and Harvey, R. F. (1977). Hormonal control of the sphincter of Oddi. In J. Delmont, (ed.). The Sphincter of Oddi. Proceedings, 3rd Gastroenterology Symp., Nice, 1976. pp. 66–71. (Basel: Karger)
5. Kreel, L. (1975). Pharmaco-radiology in barium examinations with special reference to glucagon. Br. J. Radiol., 48, 691.