%0 Journal Article %A P. N. Vabishchevich %T Iterative reduction of a mixed boundary value problem to the Dirichlet problem %J Differencialʹnye uravneniâ %D 1989 %P 1177-1183 %V 25 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1989_25_7_a10/ %G ru %F DE_1989_25_7_a10