%0 Journal Article %A O. E. Tikhonov %T On Convergence of Functions of Normal Operators in Strong Operator Topology %J Funkcionalʹnyj analiz i ego priloženiâ %D 2007 %P 93-95 %V 41 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_2007_41_3_a7/ %G ru %F FAA_2007_41_3_a7