TY  - JOUR
AU  - Silva, Pedro V.
TI  - Free group languages : rational versus recognizable
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 2004
SP  - 49
EP  - 67
VL  - 38
IS  - 1
PB  - EDP-Sciences
UR  - http://www.numdam.org/articles/10.1051/ita:2004003/
DO  - 10.1051/ita:2004003
LA  - en
ID  - ITA_2004__38_1_49_0
ER  -