TY  - JOUR
AU  - J. Néraud
TI  - On the deficit of a set of words.
JO  - Semigroup forum
PY  - 1990
SP  - 1
EP  - 22
VL  - 41
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1990__41_2_135032/
ID  - SF_1990__41_2_135032
ER  -