1. Dobbing, J., in Applied Neurochemistry (edit. by Davison, A. N., and Dobbing, J.) (Blackwell, Oxford, 1968).
2. Dickerson, J. W. T., Dobbing, J., and McCance, R. A., Proc. Roy. Soc., B, 166, 396 (1967).
3. Perinatal Problems (edit. by Butler, N. R., and Alberman, E. D.) (Living-stone, Edinburgh, 1969).
4. Burton, K., Biochem. J., 62, 315 (1956).
5. Lapham, L. W., Science, 159, 310 (1968).