TY  - JOUR
AU  - C.M. Reis
TI  - A note on f-disjunctive languages.
JO  - Semigroup forum
PY  - 1987
SP  - 159
EP  - 166
VL  - 36
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1987__36_134892/
ID  - SF_1987__36_134892
ER  -