ỔN, P. V. on the complexity of recognition of regular layer languages generating by extended hyper generating-schemas. Journal of Computer Science and Cybernetics, [S. l.], v. 20, n. 2, p. 176–182, 2012. DOI: 10.15625/1813-9663/20/2/1474. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1474. Acesso em: 23 nov. 2024.