%0 Journal Article %A S. K. Kulazhanov %T On a boundary value problem for a model equation of mixed type %J Differencialʹnye uravneniâ %D 1982 %P 343-345 %V 18 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_2_a19/ %G ru %F DE_1982_18_2_a19