@article{TM_1991_200_a2,
     author = {S. M. Aseev},
     title = {Smooth approximations of differential inclusions and time optimal control problem},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {27--34},
     publisher = {mathdoc},
     volume = {200},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1991_200_a2/}
}