1Booker Gary S. and Barn,Robert J. ,1988."A Reformation of the Economic Theory of Fertility" ,Q. J. E. 103(February 1988) :1-25.
2Becket.Gary S. , and H, G. Lewis, 1996. "On the Interaction between the Quantity and Quality of Children", J. Polit. Econ,,Mar./Apt, Suppl. ,81 ,S279-88.
3Razin, Assaf. , and Uri Ben-Zion."1975. " An Intergenerational Model of Population Growth", The American Economic Review, Volume 65,Issue 5(Dec. ,1975),923-933.
4Willis, Robert J. , 1985. "A Theory of the Equilibrium Interest Rate in an Overlapping Generations Model: Life Cycles, Institutions and Population Growth," discussioa paper # 85-8,Economic Research Center/NORC, University of Chicago.
