%0 Journal Article %A Yu. I. Karlovich %T Algebras of singular integral operators with discrete groups of %J Doklady Akademii Nauk %D 1989 %P 274-280 %V 304 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_304_2_a3/ %G ru %F DAN_1989_304_2_a3