RUẬN, Đặng H.; BÌNH, N. T. The family of languages accepted by pushdown automata with 5-components. Journal of Computer Science and Cybernetics, [S. l.], v. 17, n. 4, p. 69–72, 2012. DOI: 10.15625/1813-9663/17/4/2294. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/2294. Acesso em: 2 may. 2024.