Pál Dömösi, Manfred Kudlek. An Improvement of Iteration Lemmata for Context-free Languages. In Masami Ito, Teruo Imaoka, editors, Proceedings of the International Colloquium on Words, Languages & Combinatorics III, Kyoto, Japan, March 14-18, 2000. pages 185-191, World Scientific, 2000.
Abstract is missing.