%0 Journal Article %A A. A. Samarskii %T Additivity principle for the construction of efficient difference schemes %J Doklady Akademii Nauk %D 1965 %P 1253-1256 %V 165 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_165_6_a8/ %G ru %F DAN_1965_165_6_a8