@article{DE_1997_33_7_a21,
     author = {V. B. Kovalevskii and S. M. Kozlov},
     title = {On the solution of the problem of analytic construction of optimal controllers},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1002--1003},
     publisher = {mathdoc},
     volume = {33},
     number = {7},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_7_a21/}
}