@article{FPM_1997_3_2_a13,
     author = {V. V. Filippov},
     title = {On differential inclusions of second order},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {587--623},
     year = {1997},
     volume = {3},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1997_3_2_a13/}
}