%0 Journal Article %A Leo Livshits %A Gordon MacDonald %A Heydar Radjavi %T Universal bounds for matrix semigroups %J Studia Mathematica %D 2011 %P 69-77 %V 203 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm203-1-4/ %R 10.4064/sm203-1-4 %G en %F 10_4064_sm203_1_4