%0 Journal Article
%A Patty, C. W.
%T Homology of Deleted Products of Contractible 2-Dimensional Polyhedra. I
%J Canadian journal of mathematics
%D 1968
%P 416-441
%V 20
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-039-3/
%R 10.4153/CJM-1968-039-3
%F 10_4153_CJM_1968_039_3