%0 Journal Article %A E. G. D'yakonov %T On Spectral Problems in Energy Spaces on Composite Manifolds with Singular Geometry of the Blocks: III %J Differencialʹnye uravneniâ %D 2005 %P 1375-1386 %V 41 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2005_41_10_a9/ %G ru %F DE_2005_41_10_a9