%0 Journal Article %A A. Ya. Kazakov %T Integral symmetries, integral invariants, and monodromy matrices for ordinary differential equations %J Teoretičeskaâ i matematičeskaâ fizika %D 1998 %P 323-335 %V 116 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1998_116_3_a0/ %G ru %F TMF_1998_116_3_a0