1) Many reports in Abstracts of Contributed Papers at the International Symposium on Visual Pigment and Purple Membrane, 40 pp., September 9-10, 1978, Kyoto University.
2) BROWN, P. K., and WALD, G. (1956): The neo-b isomer of vitamin A and retinene. J. Biol. Chem., 222, 865-877.
3) HUBBARD, R., BROWN, P. K., and BOWNDS, D. (1971): Methodology of vitamin A and visual pigments, in Methods in Enzymology, Vol. 18C, ed. by McCormick, D. B., and Wright, L. D., Academic Press, New York, pp. 615-653.