%0 Journal Article %A Choi Sung Bong %T The Neumann problem for the biharmonic equation %J Differencialʹnye uravneniâ %D 1991 %P 169-172 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_1_a23/ %G ru %F DE_1991_27_1_a23