Droste, Manfred, and Werner Kuich. “A Kleene Theorem for Weighted ω-Pushdown Automata”. Acta Cybernetica 23, no. 1 (January 1, 2017): 43-59. Accessed November 23, 2024. https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3914.