1. The strategic petroleum reserve: how large should it be?;Balas,1981
2. BP Statistical Review of World Energy 2007;BP,2007
3. Oil stockpiles and import reductions: a dynamic programming approach;Chao;Operations Research,1983
4. China News Service, November 23, 2007. Current strategic oil reserves are between 2 million and 3 million tons. 〈www.chinanews.com.cn/cj/kong/news/2007/11-23/1085991.shtml〉.
5. Dynamic Programming: Theory and Application;Denardo,1982