@article{DE_1990_26_11_a6,
     author = {Kh. G. Guseinov and V. N. Ushakov},
     title = {Strongly and weakly invariant sets with respect to a differential inclusion, their derivatives and application to control problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1888--1894},
     publisher = {mathdoc},
     volume = {26},
     number = {11},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_11_a6/}
}