%0 Journal Article %A Richard Crownover %T Principal ideals which are maximal ideals in Banach algebras %J Studia Mathematica %D 1969 %P 299-304 %V 33 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-33-3-299-304/ %R 10.4064/sm-33-3-299-304 %G en %F 10_4064_sm_33_3_299_304