%0 Journal Article %A V. G. Mikhalev %T Investigation of nonlinear one-dimensional systems by means of the Hamiltonian formalism %J Teoretičeskaâ i matematičeskaâ fizika %D 1988 %P 199-206 %V 76 %N 2 %U http://geodesic.mathdoc.fr/item/TMF_1988_76_2_a3/ %G ru %F TMF_1988_76_2_a3