1. Dean FRA. Effects of malnutrition, especially of slight degree on the growth of young children.Courrier International Children’s Cante, Paris 1965; 15–73.
2. Jelliffe DB. Assessment of nutritional status in the community.W.H.O., Geneva, Monograph series 1966; 53.
3. Udani PM. Physical growth in children in different socio economic groups.Indian J. Child Health 1963;12: 593–611.
4. Sundaram KR, Shantha M, Lamba IMS et al. Estimation of the median age at which chest circumference overtakes head circumference in children.Indian J Med Res 1977;65: 266–272.
5. Finney DJ. Probit Analysis:A statistical treatment of the sigmoid response curve (2nd edition). London:Cambridge University Press, 1952.