1. Patterns of attachment behavior shown by the infant in interaction with his mother;Ainsworth;Merrill-Palmer Quarterly,1964
2. Patterns of infant-mother attachment as related to maternal care: Their early history and their contribution;Ainsworth,1983
3. Attachments and other affectional bonds across the life cycle;Ainsworth,1991
4. Models of intergenerational relations in mid-life;Aldous;Journal of Marriage and the Family,1991
5. The understanding heart: Aging parents and their favorite children;Aldous;Child Development,1985