%0 Journal Article %A Sh. A. Alimov %A V. A. Il'in %T Spectral decompositions corresponding to an arbitrary nonnegative selfadjoint extension of Laplace's operator %J Doklady Akademii Nauk %D 1970 %P 9-12 %V 193 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_193_1_a0/ %G ru %F DAN_1970_193_1_a0