%0 Journal Article %A Giles, R. %A Kummer, H. %T A Matrix Representation of a Pair of Projections in a Hilbert Space %J Canadian mathematical bulletin %D 1971 %P 35-44 %V 14 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1971-006-5/ %R 10.4153/CMB-1971-006-5 %F 10_4153_CMB_1971_006_5