%0 Journal Article %A E. G. Sitnikova %T The behavior of solutions of a mixed boundary value problem for a higher-order elliptic equation %J Differencialʹnye uravneniâ %D 1986 %P 2176-2178 %V 22 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_12_a20/ %G ru %F DE_1986_22_12_a20