%0 Journal Article %A Aleksandar Torgašev %T Concept Of The Spectral Sets In Wachs Spaces I (Definitions And Basic Properties) %J Publications de l'Institut Mathématique %D 1978 %P 213 %V _N_S_23 %N 37 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1978_N_S_23_37_a25/ %F PIM_1978_N_S_23_37_a25