%0 Journal Article %T Characterizations of Finite Projective and Affine Spaces %J Canadian journal of mathematics %D 1969 %P 64-75 %V 21 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-007-9/ %R 10.4153/CJM-1969-007-9 %F 10_4153_CJM_1969_007_9