[1] Barro R J, Sala-I-Martin X. Economic growth. New York: McGraw-Hill Inc, 1995

[2]Becker G S, Mulligan K C. The endogenous determination of time preference. Quarterly Journal of

Economics, 1997, August: 729-758

[3] Cass D. Optimum growth in an aggregative model of capital accumulation. Review of Economic Studies,

1965, 37: 233-240

[4] Fleming W H, Rishel R W. Deterministic and stochastic optimal control. New York: Springer-Verlag Inc,

1975

[5] Gollier C. The economics of risk and time. MIT Press, 2001

[6] Gong Liutang, Fei Pusheng. Local an global stability for the infinite-horizon variation problems. Acta

Mathematica Scientia, 1998, 18(3): 278-284

[7]Gong Liutang. Applications of Hamiltonian and Laplace transform in an economic growth model. Acta

Mathematica Scientia, 2000, 20B(4): 442-450

[8] Kemien M I, Schwartz N L. Dynamic optimization. Elsevier Science Publishing Co Inc, 1991

[9] Kimball M S. Precautionary savings in the small and in the large. Econometrica, 1990, 58: 53-73

[10] Koopmans T C. On the concept of optimal economic growth. In: The Econometric Approach to Develop-

ment Planning. Amsterdam: North Holland, 1965

[11] Laibson D. Golden eggs and hyperbolic discounting. Quarterly Journal of Economics, 1997, 112: 443-77

[12] Pontryagin L S. Ordinary differential equations. Reading, Mass: Addison-Wesley, 1962

[13] Ramsey F. A contribution to the theory of taxation. Economic Journal, 1928, 37: 47-61

[14] Sargent M T. Recursive macroeconomic theory. MIT Press, 2000