@article{TVP_1993_38_4_a1,
     author = {V. P. Belavkin},
     title = {Quantum diffusion, measurement and {filtering.~I}},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {742--757},
     year = {1993},
     volume = {38},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1993_38_4_a1/}
}