%0 Journal Article %A T. Sh. Kal'menov %A M. O. Otelbaev %T Regular boundary value problems for the Lavrent'ev--Bicadze equation %J Differencialʹnye uravneniâ %D 1981 %P 873-885 %V 17 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_5_a11/ %G ru %F DE_1981_17_5_a11