%0 Journal Article %A B. M. Gurevich %A O. V. Radkevich %T Asymptotically additive integrals of motion of particles of non-identical mass %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1994 %P 233-234 %V 49 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1994_49_1_a10/ %G en %F RM_1994_49_1_a10