TY  - JOUR
AU  - Plemmons, R. J.
TI  - On a Conjecture Concerning Semigroup Homomorphisms
JO  - Canadian journal of mathematics
PY  - 1970
SP  - 641
EP  - 644
VL  - 22
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-070-4/
DO  - 10.4153/CJM-1970-070-4
ID  - 10_4153_CJM_1970_070_4
ER  -