TY - JOUR AU - V. F. Borisov TI - On two-dimensional integral varieties of a~class of discontinuous Hamiltonian systems JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 2000 SP - 357 EP - 377 VL - 6 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_2000_6_2_a1/ LA - ru ID - FPM_2000_6_2_a1 ER -