@article{TM_1991_200_a1,
     author = {A. V. Arutyunov and V. I. Blagodatskikh},
     title = {Maximum-principle for differential inclusions with space constraints},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {4--26},
     publisher = {mathdoc},
     volume = {200},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1991_200_a1/}
}