%0 Journal Article %A W. Żelazko %T On permanently singular elements in commutative m-convex locally convex algebras %J Studia Mathematica %D 1970 %P 181-190 %V 37 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-37-2-181-190/ %R 10.4064/sm-37-2-181-190 %G en %F 10_4064_sm_37_2_181_190