A sharpening of the Parikh mapping

Mateescu, Alexandru; Salomaa, Arto; Salomaa, Kai; Yu, Sheng

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Volume 35 (2001) p. 551-564

A characterization of poly-slender context-free languages

Ilie, Lucian; Rozenberg, Grzegorz; Salomaa, Arto

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Volume 34 (2000) p. 77-86

On parallel deletions applied to a word

Kari, Lila; Mateescu, Alexandru; Paun, Gheorghe; Salomaa, Arto

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Volume 29 (1995) p. 129-144

PCP-prime words and primality types

Mateescu, Alexandru; Salomaa, Arto

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Volume 27 (1993) p. 57-70