1. Agarkov, G. B. and Gilevich, S. A., 1979, On the question of chemoreception by dolphins, Vestnik Zool. 1979:3–11.
2. Ceruti, M. G., Fennessey, P. V. and Tjoa, S. S., 1985, Chemoreceptively active compounds in secretions, excretions and tissue extracts of marine mammals, Comp. Biochem. Physiol., 82A (3):505–514.
3. Donaldson, B. J., 1977, The tongue of the bottlenosed dolphin (Tursiops truncatus). in: “Functional Anatomy of Marine Mammals, Vol. 3,” R. J. Harrison, ed., Academic Press, New York.
4. Fobes, J. L., and Smock, C. C., 1981, Sensory capacities of marine mammals, Psychol. Bull., 89:288–307.
5. Gellermann, L. W., 1933, Chance orders of alternating stimuli in visual discrimination experiments, J. Gen. Psychol., 42:206–208.