%0 Journal Article %A V. I. Slobodin %T Homogeneous boundary value problems for a polyharmonic operator %J Doklady Akademii Nauk %D 1989 %P 1051-1055 %V 306 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_306_5_a5/ %G ru %F DAN_1989_306_5_a5