[UseMoney=1][UseMoney=5][UseMoney=1][UseMoney=5][UseMoney=5]
[/UseMoney]

[/UseMoney]不知道有免费的下载，为保护已购买的用户，又分别加上两篇英文相关的文章：business cycle and stock market volatility a particle filter approach和finance and the business cycle a kalman filter approach with markov switching，[/UseMoney][/UseMoney][/UseMoney]

[此贴子已经被作者于2008-8-16 15:46:07编辑过]