%0 Journal Article %A O. A. Sultanov %T Lyapunov functions and asymptotics at infinity of solutions of equations that are close to Hamiltonian equations %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2019 %P 96-107 %V 163 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2019_163_a6/ %G ru %F INTO_2019_163_a6