@article{ZVMMF_1978_18_1_a21,
     author = {A. V. Lotov},
     title = {Uniform approximation of the attainability set for a differential system by attainability sets for its multistep analogues},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {233--235},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1978_18_1_a21/}
}