%0 Journal Article %A V. F. Borisov %T On two-dimensional integral varieties of a~class of discontinuous Hamiltonian systems %J Fundamentalʹnaâ i prikladnaâ matematika %D 2000 %P 357-377 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2000_6_2_a1/ %G ru %F FPM_2000_6_2_a1