%0 Journal Article %A Peter D. Johnson, Jr. %T Spectral radius and seminorms in finite-dimensional algebras %J Colloquium Mathematicum %D 1978 %P 331-341 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-39-2-331-341/ %R 10.4064/cm-39-2-331-341 %G en %F 10_4064_cm_39_2_331_341