1. Neligan GA, Kolvin I, Scott DM, Garside RF. Born too soon or born too small. London: W Heinemann Medical Books Ltd, 1976.
2. Naftolin F. Abnormal fetal growth: Biological bases and consequences. W. Berlin: Dahlem Konferenzen, 1978.
3. Spiers PS. Does growth retardation predispose the fetus to congenital malformation? Lancet: 1982; 1: 312–314.
4. Gould JB. The low-birth-weight infant. In: Human Growth 2nd Edition, Vol 1. Eds. F Falkner, JM Tanner. New York, London: Plenum Publishing Corporation, 1986: pp.391–413.
5. Brent RL, Jensh RP. Intra-uterine growth retardation. Advances in Teratology 1967; 2: 139–227.