TY  - JOUR
AU  - Hilton, P. J.
AU  - Wu, Y.-C.
TI  - On the Addition of Relations in an Abelian Category
JO  - Canadian journal of mathematics
PY  - 1970
SP  - 66
EP  - 74
VL  - 22
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-009-7/
DO  - 10.4153/CJM-1970-009-7
ID  - 10_4153_CJM_1970_009_7
ER  -