1. Kleisner de Galán, E. H., Nature, 211, 1324 (1966).
2. Jacobs, P. A., Court Brown, W. M., and Doll, R., Nature, 191, 1178 (1961).
3. Jacobs, P. A., Brunton, M., Court Brown, W. M., and Doll, R., Nature, 197, 1089 (1963).
4. Jacobs, P. A., Brunton, M., and Court Brown, W. M., Ann. Hum. Genet., 27, 353 (1964).
5. Court Brown, W. M., Buckton, K. E., Jacobs, P. A., Tough, I. M., Kuenssberg, E. V., and Knox, J. D. E., Chromosome Studies on Adults, Eugenics Laboratory Memoir Series, 42 (Cambridge University Press, 1966).