%0 Journal Article
%A I. A. Shishmarev
%T A mean value theorem for a polyharmonic equation and its consequences
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1969
%P 69-76
%V 3
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1969_3_4_a6/
%G ru
%F FAA_1969_3_4_a6