TY  - JOUR
AU  - Barr, Michael
TI  - The Existence of Injective Effacements
JO  - Canadian mathematical bulletin
PY  - 1975
SP  - 1
EP  - 6
VL  - 18
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-001-5/
DO  - 10.4153/CMB-1975-001-5
ID  - 10_4153_CMB_1975_001_5
ER  -