VŨ ANH, B. On the determining and minimizing problems of the duration automata. Journal of Computer Science and Cybernetics, [S. l.], v. 30, n. 2, p. 148–162, 2014. DOI: 10.15625/1813-9663/30/2/3487. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/3487. Acesso em: 24 apr. 2024.