%0 Journal Article %A R. V. Kuz'min %T On closed trajectories with a~particular integral %J Matematičeskoe modelirovanie %D 1995 %P 94 %V 7 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_1995_7_5_a65/ %G ru %F MM_1995_7_5_a65