9Hakanson H. Optimal investment and consumption strate- gies underrisk, and uncerta in lifetime, and insurance [ J ]. International Ecnomic Review, 1969,10(3 ) :443 - 466.
10Campbell A. The demand for life insurance:Anapplica- tion of the economics of uncertainty [ J ]. Journal of Fi- nance, 1980,35 : 1155 - 1172.