Bibliography
- Stone, I., and Gray, P. P. Am. Soc. Brewing Chemists, Proc.—11th Annual Meeting, 1946, p. 40.
- Report of Sub-Committee on Color, Am. Soc. Brewing Chemists, Proc.—12th Annual Meeting, 1947, p. 126.
- Nissen, B. H., and Petersen, R. B. Am. Soc. Brewing Chemists, Proc.—5th Annual Meeting, 1942, p. 77.
- Am. Soc. Brewing Chemists, Proc., 1948, 152–153.
- Rohner, R. L. Private Communication.
- National Bureau of Standards, Letter Circular—LC 929, Nov. 26, 1948.