1. More than money? Men’s contributions to their children’s lives;Amato,1998
2. Bearman, P.S., Jones, J., Udry, J.R., 1997. The National Longitudinal Study of Adolescent Health: Research Design. .
3. Number of siblings and educational mobility;Blake;Am. Sociol. Rev.,1985
4. Number of siblings and educational attainment;Blake;Science,1989
5. From marriage to remarriage and beyond: findings from the developmental issues in stepfamilies research project;Bray,1999