%0 Journal Article %A A. V. Kartynnik %T A three-point mixed problem with an integral condition with respect to the space variable for second-order parabolic equations %J Differencialʹnye uravneniâ %D 1990 %P 1568-1575 %V 26 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1990_26_9_a11/ %G ru %F DE_1990_26_9_a11