%0 Journal Article %A A. A. Larin %T On the boundedness of powers of selfadjoint extensions of singular elliptic operators acting in weighted classes %J Differencialʹnye uravneniâ %D 1992 %P 528-529 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_3_a24/ %G ru %F DE_1992_28_3_a24