1. 1. D. A. Booth, Y. Katsuki, M. Sato, S. F. Takagi, and Y. Oomura, 1977 .InFood Intake and Chemical Senses . : 317 -330 . University of Tokyo Press. Tokyo.
2. 2. J. Magnen, R. A. Boakes, D. A. Popplewell, and M. J. Burton, 1987 .InEating Habits . : 131 -154 . Wiley. Chichester, England.
3. 3. J. Magnen, 1987 .InProgress in Sensory Physiology . Vol. 8 : 95 -128 . Springer-Verlag. Berlin.
4. 4. P. T. Young, 1967 .InHandbook of Physiology (Sec. 6) Alimentary Canal . Vol. 2 : 353 -366 . American Physiological Society. Washington, D.C.
5. 5. J. Magnen, E. Stellar, and J. M. Sprague, 1971 .InProgress in Physiological Psychology . Vol. 2 : 203 -261 . Academic Press. New York.