1. D. Foster, 1956 . Psychological aspects of food colors from the consumer's standpoint. Mimeo. report distributed by U.S. Testing Co., Inc., Hodoken; N.J.
2. A.S. Kostyla, and F.M. Clydesdale, 1978 . The psychophysical relationships between color and flavor of some fruit-flavored beverages-Influence of the addition of red, unpublished manuscript.