%0 Journal Article %A T. V. Kozlova %T Systems admitting polynomial integrals of third and forth degrees (the case of elastic reflections) %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2001 %P 69-71 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2001_3_a14/ %G ru %F VMUMM_2001_3_a14