%0 Journal Article
%A I. M. Spitkovsky
%T A criterion for normality of operators in Hilbert space
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1982
%P 86-87
%V 16
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1982_16_2_a17/
%G ru
%F FAA_1982_16_2_a17