%0 Journal Article %A D. A. Onishchenko %T Reduction to normal form of equations of a canonical system depending on a parameter %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1982 %P 78-81 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1982_3_a18/ %G ru %F VMUMM_1982_3_a18