%0 Journal Article %A V. S. Serov %T On the convergence in $H^{s}$-norm of the spectral expansions corresponding to the differential operators with singularity %J Fundamentalʹnaâ i prikladnaâ matematika %D 1995 %P 1125-1128 %V 1 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1995_1_4_a24/ %G ru %F FPM_1995_1_4_a24