%0 Journal Article %A E. I. Moiseev %T Some boundary value problems for equations of mixed type %J Differencialʹnye uravneniâ %D 1992 %P 110-121 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_1_a12/ %G ru %F DE_1992_28_1_a12