%0 Journal Article
%A Ohta, Haruto
%T Topological Extension Properties and Projective Covers
%J Canadian journal of mathematics
%D 1982
%P 1255-1275
%V 34
%N 6
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-088-4/
%R 10.4153/CJM-1982-088-4
%F 10_4153_CJM_1982_088_4