%0 Journal Article %A Stevenson, Frederick W. %T Weakly Isotopic Planar Ternary Rings %J Canadian journal of mathematics %D 1975 %P 32-36 %V 27 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-005-9/ %R 10.4153/CJM-1975-005-9 %F 10_4153_CJM_1975_005_9