%0 Journal Article %@ 0001-6969 %A Voiculescu Dan %D 1993 %F acta:15384 %J Acta scientiarum mathematicarum %K Matematika %N 1-4 %P 277-287 %T A note on the augmentation ideal of certain rings associated with free groups %U http://acta.bibl.u-szeged.hu/15384/ %V 57 %Z Bibliogr.: 287. p.