@article{ZhangPaper11,
author = {Bao, Feng and Cao, Yanzhao and Webster, Clayton and Zhang, Guannan},
title = {{A hybrid sparse-grid approach for nonlinear filtering problems based on adaptive-domain of the Zakai equation approximations}},
journal = {SIAM/ASA Journal on Uncertainty Quantification},
year = {2014},
volume = {2},
pages = {784--804}
}