%0 Journal Article %A S. E. Romanova %T On the solution by the Schwartz alternating method of a mixed boundary-value problem for the Laplace difference equation on stepwise regions %J Doklady Akademii Nauk %D 1979 %P 536-539 %V 245 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_245_3_a5/ %G ru %F DAN_1979_245_3_a5