@inproceedings{shing-tung2005existence,
title={Existence and uniqueness of solutions for Duncan-Mortensen-Zakai equations},
author={Shing-Tung Yau, and SS-T Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204829893688230},
pages={536-541},
year={2005},
}