@article{DE_2004_40_1_a4,
     author = {Yu. V. Masterkov and L. I. Rodina},
     title = {Sufficient {Conditions} for the {Stable} {Controllability} of a {Nonautonomous} {System} in the {Critical} {Case}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {33--40},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_1_a4/}
}