1. Ahlburg, D.A., and Vaupel, J. 1990. Alternative projections of the U.S. population. Demography 24 (4): 639–652.
2. Bennett, N., and Bloom, D.E. 1990. Plotting our destiny: Interpreting our demographic trajectory. American Planning Association Journal 135–139.
3. Blau, F.D., and Ferber, M.A. 1986. The Economics of Women, Men, and Work. Englewood Cliffs, NJ: Prentice-Hall.
4. Bumpass, L. 1990. What’s happening to the family? Interactions between demographic and institutional change. Demography 27 (4): 483–498.
5. Coale, A.J., and Watkins, S. 1986. The Decline of Fertility in Europe. Princeton, NJ: Princeton University Press.