%0 Journal Article %A SawoĊ„, Zbigniew %T Some remarks about the three spaces problem in Banach algebras %J Czechoslovak Mathematical Journal %D 1978 %P 56-58 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101513/ %R 10.21136/CMJ.1978.101513 %G en %F 10_21136_CMJ_1978_101513