1. 题目：Earnings uncertainty and precautionary saving
    作者: Luigi Guiso, Tullio Jappelli, Daniele Terlizzesse
    期刊：Journal of Monetary Economics, 1992, 30(2):307-337.

2. 题目：Uncertain Medical Expenses and Precautionary Saving Near the End of the Life Cycle
   作者：Michael G. Palumbo
   期刊：Review of economic studies, 1999, 66(2)：395-421.

3. 题目：Precautionary Saving and Health Rise: Evidence from Italian Households Using a Time Series of Cross Sections
    作者：Vincenzo Atella ，Furio C. Rosati， Mariacristina Rossi
    期刊：Rivista di Politica economica, 2006, 96(3): 113-132.

4. 题目：Uncertainty, the Demand for Health Care, and Precautionary Saving
    作者：Diego Nocetti, William T.Smith
    期刊：The B.E. Journal of Economic analysis & Policy, 2010,10(1).