1. Bell, S. (1934). “Huntington’s chorea.”Treas. Hum. Inher. 4, 1.
2. —— (1935). “On the peroneal type of progressive muscular atrophy.”Treas. Hum. Inher. 4, 69.
3. —— (1939). “On hereditary ataxia and spastic paraplegia.”Treas. Hum. Inher. 4, 141.
4. Fisher, R. A. (1931). “The evolution of dominance.”Biol. Rev. 6, 345.
5. —— (1938).Statistical Methods for Research Workers, 6th ed. Edinburgh: Oliver and Boyd.