@article{DAN_1992_324_1_a5,
     author = {\`E. R. Korepanov},
     title = {Discrete conditionally optimal filters with memory},
     journal = {Doklady Akademii Nauk},
     pages = {35--38},
     publisher = {mathdoc},
     volume = {324},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_324_1_a5/}
}