%0 Journal Article %A W. Żelazko %T Concerning a problem of Arens on removable ideals in Banach algebras %J Colloquium Mathematicum %D 1974 %P 127-131 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-30-1-127-131/ %R 10.4064/cm-30-1-127-131 %G en %F 10_4064_cm_30_1_127_131