TY  - JOUR
AU  - K.P. Shum
AU  - M.W. Chan
TI  - Homomorphisms of implicative semigroups.
JO  - Semigroup forum
PY  - 1993
SP  - 7
EP  - 15
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1993__46_1_135203/
ID  - SF_1993__46_1_135203
ER  -