7Ahituv, Avner, and Joseph Zeira, 2011, "Technical Progress and Early Retirement", Economic Journal, Vol. 121, 171-193.
8Banerjee, Abhijit, Xin Meng, Tommaso Porzio, and Naacy Qian, 2014, "Aggregate Fertility and Household Savings: A General Equilibrium Analysis Using Micro Data", NBER Working Paper, No. 20050.
9Becker, Gary S. , and H.G. Lewis, 1976, "On the Interaction between the Quantity and Quality of Children", Journal of Political Economy, Vol. 81, 279-288.
10Cai, Fang, John Giles, and Xin Meng, 2006, " How Well do Children Insure Parents against Low Retirement Income? An Analysis Using Survey Data from Urban China", Journal of Public Economics, Vol. 90, 2229-2255.
