篇名：Exponential Stability for Nonlinear Filtering of Diffusion Processes in a Noncompact Domain
作者：Rami Atar
出版社：The Annals of Probability, Vol. 26, No. 4 (Oct., 1998), pp. 1552-1574
(article consists of 23 pages)  Institute of Mathematical Statistics
电子链接：http://www.jstor.org/stable/2652780