@article{AIHPB_1997__33_6_697_0,
     author = {Atar, Rami and Zeitouni, Ofer},
     title = {Exponential stability for nonlinear filtering},
     journal = {Annales de l'I.H.P. Probabilit\'es et statistiques},
     pages = {697--725},
     publisher = {Gauthier-Villars},
     volume = {33},
     number = {6},
     year = {1997},
     mrnumber = {1484538},
     zbl = {0888.93057},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPB_1997__33_6_697_0/}
}