%0 Journal Article %A Lissner, David %A Geramita, Anthony %T Remarks on Op and Towber Rings %J Canadian journal of mathematics %D 1970 %P 1109-1117 %V 22 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-128-6/ %R 10.4153/CJM-1970-128-6 %F 10_4153_CJM_1970_128_6