%0 Journal Article %A Fischer, J. %T Counterexamples to Two Problems on One-Relator Groups %J Canadian mathematical bulletin %D 1976 %P 363-364 %V 19 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1976-055-2/ %R 10.4153/CMB-1976-055-2 %F 10_4153_CMB_1976_055_2