@article{DAN_1997_352_6_a6,
     author = {P. V. Nadezhdin},
     title = {Design of optimal output-closed linear systems},
     journal = {Doklady Akademii Nauk},
     pages = {746--748},
     year = {1997},
     volume = {352},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_352_6_a6/}
}