%0 Journal Article %A Zaks, Abraham %T Quasi-Frobenius X-Rings %J Canadian mathematical bulletin %D 1970 %P 23-30 %V 13 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-005-3/ %R 10.4153/CMB-1970-005-3 %F 10_4153_CMB_1970_005_3