Dömösi, Pál. “On the Semigroup of Automaton Mappings With Finite Alphabet”. Acta Cybernetica 1, no. 4 (January 1, 1972): 251-254. Accessed November 21, 2024. https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3091.