%0 Journal Article %A Tilly, Ben %T Derivations Whose Iterates are Zero or Invertible On a Left Ideal %J Canadian mathematical bulletin %D 1994 %P 124-132 %V 37 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-018-7/ %R 10.4153/CMB-1994-018-7 %F 10_4153_CMB_1994_018_7