%0 Journal Article %A V. L. Makarov %A I. L. Makarov %A V. G. Prikazchikov %T Exact difference schemes and schemes of any order of accuracy for systems of second-order differential equations %J Differencialʹnye uravneniâ %D 1979 %P 1194-1205 %V 15 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_7_a3/ %G ru %F DE_1979_15_7_a3