1. The influence of early contact on maternal and infant behavior in primiparae;de Chateau;Birth Fam J,1976
2. How early is early contact? Defining the limits of the sensitive period;Hales;Pediatr Res,1976
3. Breast feeding at one hour of age;Johnson;MCN,1976
4. Early neonatal contact: effect on growth, breast feeding and infection in the first year of life;Kennell;Pediatr Res,1976
5. Maternal attachment: importance of the first post-partum days;Klaus;N Engl J Med,1972