@article{ZVMMF_2014_54_1_a3,
     author = {M. O. Osintsev and V. A. Sobolev},
     title = {Reduction of dimension of optimal estimation problems for dynamical systems with singular perturbations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {50--64},
     year = {2014},
     volume = {54},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2014_54_1_a3/}
}