%0 Journal Article %A A. S. Fokht %T A certain estimate of a polyharmonic function and its derivatives near the boundary of the domain. I %J Differencialʹnye uravneniâ %D 1968 %P 1265-1282 %V 4 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_7_a10/ %G ru %F DE_1968_4_7_a10