TY  - JOUR
AU  - Lambek, Joachim
TI  - Subequalizers
JO  - Canadian mathematical bulletin
PY  - 1970
SP  - 337
EP  - 349
VL  - 13
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-065-6/
DO  - 10.4153/CMB-1970-065-6
ID  - 10_4153_CMB_1970_065_6
ER  -