%0 Journal Article %A S. M. Grudskii %T Toeplitz operators with symbols that have discontinuities of %J Doklady Akademii Nauk %D 1995 %P 307-309 %V 342 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1995_342_3_a3/ %G ru %F DAN_1995_342_3_a3