1. The Physiology of Human Pregnancy;Hytten,1971
2. The combined effect of birth weight and length of gestation on neonatal mortality among single premature births;Schlesinger;Pediatrics,1955
3. Sequelae of low birth weight;Harper;Am. Rev. Med.,1965
4. Effect of birth weight on later intelligence;Scarr;Soc. Biol.,1969
5. From Birth to Seven;Davie,1972