1. Barrow, E. M., and Graham, J. B. (1964). Progr. Hemat., 4, 203
2. Biggs, R., Eveling, J., and Richards, G. (1955). Brit. J. Haemat., 1, 20.
3. The gene would result in a single plasma;Borchgrevink, C.F.;Acta med. scand,1960
4. Cornu, P., and Larrieu, M. J. (1959). Path. et Biol., 7, 2595.
5. Cornu, P., and Larrieu, M. J., Caen, J., and Bernard, J. (1963). Brit. J. Haemat., 9, 189.