%0 Journal Article %A V. A. Sadovnichii %T Trace formulae for ordinary differential operators of higher orders %J Matematičeskie zametki %D 1967 %P 179-188 %V 1 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1967_1_2_a6/ %G ru %F MZM_1967_1_2_a6