Yuxin Zhao Lijuan Chen Wenjian Liu Solving 2-dimensional navigation stochastic differential model based on finite element. 1775-1779 2011 ICNC http://doi.ieeecomputersociety.org/10.1109/ICNC.2011.6022511 conf/icnc/2011 db/conf/icnc/icnc2011.html#ZhaoCL11