%0 Journal Article %A N. N. Romanova %T Hamiltonian description of weakly nonlinear wave dynamics in %J Doklady Akademii Nauk %D 1994 %P 592-594 %V 335 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1994_335_5_a13/ %G ru %F DAN_1994_335_5_a13