1. Atkinson, A. J. and Ivy, A. C.: Further Attempts to Produce Achlorhydria.Am. J. Digest. Dis., 5:30–35, March, 1938.
2. Culmer, C. U., Atkinson, A. J. and Ivy, A. C.: Hydrogen Peroxide as a Depressant of Gastric Acidity.Am. J. Digest. Dis. and Nutrit., 4:219–223, June, 1937.
3. Mathews, A. P.: Physiological Chemistry, Ed. 3. New York, Wm. Wood and Company, p. 375, 1920.
4. Rigoni, M.: Ricerche sull’ureasi; l’ureasi mucosa gastrica dell’vomo e degli animali.Arch. di. sc. biol., 15:37–46, July, 1930.
5. Martin, Lay: Urease in Gastric Juice. Studies Demonstrating its Action and a Theoretical Consideration of the Method of Gastric Juice, Hydrochloric Acid Formation and Secretion.Tr. Am. Gastro-Enterol. A., pp. 3–21, 1932.