1. Gisselsson, L., Acta Oto-Laryng., 51, 636 (1960); Fex, J., Fuxe, K., and Lennerstrand, G., Acta Physiol. Scand., 64, 259 (1965); Tanaka, Y., and Katsuki, Y., J. Neurophysiol., 29, 94 (1966)
2. Desmedt, J. E., and Monaco, P., Arch. Int. Pharmacodyn., 129, 244 (1960); Desmedt, J. E., and Monaco, P., Nature, 192, 1263 (1961); Fex, J., Acta Physiol. Scand., 55, Suppl., 189 (1962).
3. Churchill, J. A., and Schuknecht, H. F., Henry Ford Hosp. Med. Bull., 7, 202 (1959); Hilding, D., and Wersäll, J., Acta Oto-Laryng., 55, 205 (1962); Rossi, G., and Cortesina, G., Minerva Otorinolaringologica, 12, 1 (1962).
4. Katz, B., and Miledi, R., Proc. Roy. Soc., B, 161, 496 (1965); Elmqvist, D., and Feldman, D. S., J. Physiol., 181, 487 (1965).
5. Moscovitch, D. H., and Gannon, R. P., J. Acoust. Soc. Amer., 37, 1201 (1965).