@article{DAN_1969_185_5_a7,
     author = {E. Ya. Roitenberg},
     title = {On the problem of control on subspaces in interrelated systems},
     journal = {Doklady Akademii Nauk},
     pages = {998--1001},
     publisher = {mathdoc},
     volume = {185},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_5_a7/}
}