TY  - JOUR
AU  - Patty, C. W.
TI  - Homology of Deleted Products of Contractible 2-Dimensional Polyhedra. I
JO  - Canadian journal of mathematics
PY  - 1968
SP  - 416
EP  - 441
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-039-3/
DO  - 10.4153/CJM-1968-039-3
ID  - 10_4153_CJM_1968_039_3
ER  -