%0 Journal Article %A O. V. Kashtanov %T Inverse mean value theorem for $i$th order associated functions of the Laplace operator %J Differencialʹnye uravneniâ %D 1993 %P 1822-1824 %V 29 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_10_a17/ %G ru %F DE_1993_29_10_a17