1. Smithies, O., Connell, G. E., and Dixon, G. H., Amer. J. Hum. Genet., 14, 14 (1962).
2. Smithies, O., Connell, G. E., and Dixon, G. H., J. Mol. Biol., 21, 213 (1966).
3. Smithies, O., Connell, G. E., and Dixon, G. H., Nature, 196, 232 (1962).
4. Dixon, G. H., Essays in Biochemistry, 2, 147 (Academic Press, New York and London, 1966).
5. Eck, R. V., and Dayhoff, M. O., Science, 152, 363 (1966).