%0 Journal Article %A Cheung, Alan L. C. %T Adjoints of a Geometry %J Canadian mathematical bulletin %D 1974 %P 363-365 %V 17 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-066-5/ %R 10.4153/CMB-1974-066-5 %F 10_4153_CMB_1974_066_5