TY  - JOUR
AU  - W.R. Nico
TI  - A counterexample in the cohomology of monoids.
JO  - Semigroup forum
PY  - 1972
SP  - 93
EP  - 94
VL  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1972__4_133883/
ID  - SF_1972__4_133883
ER  -