1. Adrian TE, Greenberg GR, Bloom SR: Actions of pancreatic polypeptide in man. In: Gut Hormones, Second Edition, Bloom, SR, Polak, JM (eds). New York: Churchill Livingstone, 1981.
2. Alfidi RJ, Bhyun DS, Crile G, Hawk W: Arteriography and hypoglycemia. Surg Gynec Obstet 133: 477–482, 1971.
3. Amiranaff B, Laburthe M, Rosselin G: Characterization of specific binding sites for vasoactive intestinal peptide in rat intestinal epithelial cell membrane, Biochem Biophys Acta 627: 215, 1980.
4. Andrew A: An experimental investigation into the possible neural crest origin of pancreatic APUD (islet) cells. J Embryol Exp Morphol 35: 577–593, 1976.
5. Andrew A, Kramer B, Rawdon BB: Gut and pancreatic amine precursor uptake and decarboxylation cells are not neural crest derivatives. Gastroenterology 84(2): 429–431, 1983.