@article{DE_1997_33_2_a3,
     author = {M. P. Dymkov},
     title = {Necessary conditions for optimality in convex problems of the control of discrete {2-D} systems with constraints},
     journal = {Differencialʹnye uravneni\^a},
     pages = {161--166},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_2_a3/}
}