Rebootable and suffix-closed ω -power languages B. Le Saëc; I. Litovsky — 1992 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
A more efficient notion of zigzag stability B. Le Saëc; I. Litovsky; B. Patrou — 1996 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications