@article{ZVMMF_1980_20_5_a5,
     author = {I. I. Gasanov and Yu. S. Ragimov},
     title = {On a control problem in a two-level hierarchical system},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1142--1154},
     publisher = {mathdoc},
     volume = {20},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1980_20_5_a5/}
}