%0 Journal Article %A M. N. Oreshina %T Spectral decomposition of normal operator in real Hilbert space %J Ufa mathematical journal %D 2017 %P 85-96 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2017_9_4_a8/ %G en %F UFA_2017_9_4_a8