%0 Journal Article %A L. A. Oganesyan %A L. A. Rukhovets %T Study of the rate of convergence of variational difference schemes for second-order elliptic equations in a two-dimensional field with a smooth boundary %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1969 %P 1102-1120 %V 9 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1969_9_5_a10/ %G ru %F ZVMMF_1969_9_5_a10