%0 Journal Article %A Z. I. Fedotova %A Yu. I. Shokin %T Invariant difference schemes with a polynomial viscosity matrix %J Doklady Akademii Nauk %D 1975 %P 51-53 %V 222 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_222_1_a11/ %G ru %F DAN_1975_222_1_a11