%0 Journal Article
%A Barr, Michael
%T The Existence of Injective Effacements
%J Canadian mathematical bulletin
%D 1975
%P 1-6
%V 18
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-001-5/
%R 10.4153/CMB-1975-001-5
%F 10_4153_CMB_1975_001_5