%0 Journal Article %A Bell, Howard E. %A Daif, Mohamad Nagy %T On Commutativity and Strong Commutativity-Preserving Maps %J Canadian mathematical bulletin %D 1994 %P 443-447 %V 37 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-064-x/ %R 10.4153/CMB-1994-064-x %F 10_4153_CMB_1994_064_x