TY  - JOUR
AU  - Barr, Michael
AU  - Makkai, Michael
TI  - On Representations of Grothendieck Toposes
JO  - Canadian journal of mathematics
PY  - 1987
SP  - 168
EP  - 221
VL  - 39
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-009-x/
DO  - 10.4153/CJM-1987-009-x
ID  - 10_4153_CJM_1987_009_x
ER  -