%0 Journal Article %A Silva, Pedro V. %T Free group languages : rational versus recognizable %J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications %D 2004 %P 49-67 %V 38 %N 1 %I EDP-Sciences %U https://doi.org/10.1051/ita:2004003 %R 10.1051/ita:2004003 %G en %F ITA_2004__38_1_49_0