%0 Journal Article %A Wild, Jonathan %T Right and Left Orthogonality %J Canadian mathematical bulletin %D 1961 %P 182-184 %V 4 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1961-021-2/ %R 10.4153/CMB-1961-021-2 %F 10_4153_CMB_1961_021_2