1. Bonding and Attachments: Theoretical Issues;Campbell,1980
2. Recurrent respiratory symptoms in the first years of life following pre-term delivery;Greenough;Journal of Perinatal Medicine,1990
3. Maternal attachment — importance of the first post partum days;Klaus;New England Journal of Medicine,1972
4. Parental attitudes to premature very low birthweight babies;Lissenden,1984
5. Predictors of parental attachment during early parenthood;Mercer;Journal of Advanced Nursing,1990