@article{DE_1979_15_9_a7,
     author = {S. A. Minyuk},
     title = {On the theory of the control and observation of hyperbolic systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1606--1613},
     publisher = {mathdoc},
     volume = {15},
     number = {9},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_9_a7/}
}