%0 Journal Article %A W. Żelazko %T A semitopological algebra without proper closed subalgebras %J Colloquium Mathematicum %D 1997 %P 239-242 %V 74 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-74-2-239-242/ %R 10.4064/cm-74-2-239-242 %G en %F 10_4064_cm_74_2_239_242