%0 Journal Article %A Andrzej Sołtysiak %T Approximate point joint spectra and multiplicative functionals %J Studia Mathematica %D 1987 %P 277-286 %V 86 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-86-3-277-286/ %R 10.4064/sm-86-3-277-286 %G en %F 10_4064_sm_86_3_277_286