%0 Journal Article %A A. A. Bel'kovich %T Quasiperiodic solutions of Hamiltonian systems with a small parameter %J Differencialʹnye uravneniâ %D 1982 %P 886-889 %V 18 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_5_a20/ %G ru %F DE_1982_18_5_a20