%0 Journal Article %A Liriano, Sal %T A New Proof of a Theoremof Magnus %J Canadian mathematical bulletin %D 1997 %P 352-355 %V 40 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1997-041-1/ %R 10.4153/CMB-1997-041-1 %F 10_4153_CMB_1997_041_1