@article{DAN_1978_243_5_a9,
     author = {V. S. Pugachev},
     title = {Recursive estimation of variables and parameters in stochastic systems described by difference equations},
     journal = {Doklady Akademii Nauk},
     pages = {1131--1133},
     publisher = {mathdoc},
     volume = {243},
     number = {5},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_5_a9/}
}