%0 Journal Article %A Honkala, J. %A Salomaa, A. %T Caractérisation results about $L$ codes %J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications %D 1992 %P 287-301 %V 26 %N 3 %I EDP-Sciences %U http://www.numdam.org/item/ITA_1992__26_3_287_0/ %G en %F ITA_1992__26_3_287_0