%0 Journal Article %A Thomas, Gary M. %T On spectral homomorphisms and continuous functions of Banach algebra elements %J Portugaliae mathematica %D 1979 %P 155-160 %V 38 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1979__38_3-4_115400/ %G en %F PORMA_1979__38_3-4_115400