%0 Journal Article %A Jerzy Płonka %T Exchange of independent sets in abstract algebras (III) %J Colloquium Mathematicum %D 1966 %P 173-180 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-15-2-173-180/ %R 10.4064/cm-15-2-173-180 %G en %F 10_4064_cm_15_2_173_180