%0 Journal Article %A Wiesław Żelazko %T On a problem of Fell and Doran %J Colloquium Mathematicum %D 1991 %P 31-37 %V 62 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-62-1-31-37/ %R 10.4064/cm-62-1-31-37 %G en %F 10_4064_cm_62_1_31_37