%0 Journal Article %A N. V. Ardelyan %T A method for the investigation of the convergence of nonlinear difference schemes %J Differencialʹnye uravneniâ %D 1987 %P 1116-1127 %V 23 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1987_23_7_a1/ %G ru %F DE_1987_23_7_a1