%0 Journal Article %A N. V. Ardelyan %T The convergence of difference schemes for two-dimensional equations of acoustics and Maxwell's equations %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1983 %P 1168-1176 %V 23 %N 5 %U http://geodesic.mathdoc.fr/item/ZVMMF_1983_23_5_a12/ %G ru %F ZVMMF_1983_23_5_a12