%0 Journal Article %A W. Narkiewicz %T Independence in a certain class of abstract algebras %J Fundamenta Mathematicae %D 1961 %P 333-340 %V 50 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-50-4-333-340/ %R 10.4064/fm-50-4-333-340 %G en %F 10_4064_fm_50_4_333_340