List of citations in Numdam for : On simple representations of language families

RAIRO. Informatique théorique, Volume 13 (1979) no. 3, pp. 241-250.

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Special issue for Professor Karel Culik II : 60 th birthday, Volume 28 (1994) no. 3-4, pp. 425-430.

Culik II, K.;  Karhumäki, J.

RAIRO. Informatique théorique, Volume 14 (1980) no. 4, pp. 349-369.