@article{ZVMMF_1989_29_12_a2,
     author = {V. V. Chumakov},
     title = {Determination of optimal controls in a hierarchical system in the presence of external factors},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1788--1799},
     publisher = {mathdoc},
     volume = {29},
     number = {12},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_12_a2/}
}