%0 Journal Article %A B. A. Plamenevskii %A V. N. Senichkin %T On the spectrum of $C^*$-algebras generated by pseudodifferential operators with isolated singularities of symbols %J Doklady Akademii Nauk %D 1981 %P 1304-1306 %V 261 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_261_6_a4/ %G ru %F DAN_1981_261_6_a4