1. The social insurance paradox;Aaron;Canadian Journal of Economics and Political Science,1966
2. Altruism, egoism, and genetic fitness: economics and sociobiology;Becker;Journal of Economic Literature,1976
3. A reformulation of the economic theory of fertility;Becker;Quarterly Journal of Economics,1988
4. Social criteria for evaluating population change;Blackorby;Journal of Public Economics,1984
5. Theory of Fertility Decline;Caldwell,1982