TY  - JOUR
AU  - J. Leech
TI  - The ...-category of a monoid.
JO  - Semigroup forum
PY  - 1986
SP  - 89
EP  - 116
VL  - 34
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1986__34_134830/
ID  - SF_1986__34_134830
ER  -