%0 Journal Article %A M. N. Moskal'kov %T Schemes of the finite-element method of increased accuracy for solution of nonstationary second-order equations %J Differencialʹnye uravneniâ %D 1980 %P 1283-1292 %V 16 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_7_a12/ %G ru %F DE_1980_16_7_a12