@article{DE_1993_29_2_a20,
     author = {Yu. L. Sachkov},
     title = {Controllability of two- and three-dimensional bilinear systems in the positive orthant},
     journal = {Differencialʹnye uravneni\^a},
     pages = {361--363},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_2_a20/}
}