%0 Journal Article %A Aleksandar Torgašev %T Finiteness of Spectra of Graphs Obtained by some Operations on Infinite Graphs %J Publications de l'Institut Mathématique %D 1983 %P 227 %V _N_S_33 %N 47 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1983_N_S_33_47_a33/ %G en %F PIM_1983_N_S_33_47_a33