Jean Berstel, Luc Boasson. Une suite decroissante de cônes rationnels. In Jacques Loeckx, editor, Automata, Languages and Programming, 2nd Colloquium, University of Saarbrücken, July 29 - August 2, 1974, Proceedings. Volume 14 of Lecture Notes in Computer Science, pages 383-397, Springer, 1974.
Abstract is missing.