%0 Journal Article %A M. L. Gol'dman %T On traces with restrictions on spectrum %J Informatics and Automation %D 1989 %P 69-77 %V 187 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1989_187_a4/ %G ru %F TRSPY_1989_187_a4