%0 Journal Article %A A. V. Krylov %T Interior averaging of first-order partial differential systems %J Matematičeskie zametki %D 1989 %P 112-113 %V 46 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1989_46_6_a16/ %G ru %F MZM_1989_46_6_a16