%0 Journal Article %A V. P. Mikhailov %T Existence of boundary values of polyharmonic functions %J Sbornik. Mathematics %D 2010 %P 735-757 %V 201 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2010_201_5_a5/ %G en %F SM_2010_201_5_a5