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 DA - 2004/// SP - 49 EP - 67 VL - 38 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ita:2004003/ UR - https://zbmath.org/?q=an%3A1082.68071 UR - https://www.ams.org/mathscinet-getitem?mr=2059028 UR - https://doi.org/10.1051/ita:2004003 DO - 10.1051/ita:2004003 LA - en ID - ITA_2004__38_1_49_0 ER -