TY  - JOUR
AU  - J. Justin
AU  - G. Pirillo
TI  - Infinite words and permutation properties.
JO  - Semigroup forum
PY  - 1990
SP  - 13
EP  - 22
VL  - 40
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1990__40_1_135001/
ID  - SF_1990__40_1_135001
ER  -