%0 Journal Article %A Ellis, G. %T A Magnus-Witt type isomorphism for non-free groups. %J Georgian Mathematical Journal %D 2002 %P 703-708 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/GMJ_2002__9_4_50969/ %G en %F GMJ_2002__9_4_50969