Thắng Đặng Q, Hân N Đình, Huy PT. Determining unambiguous degree of regular languages by automata. J. Comput. Sci. Cybern. [Internet]. 2012 Jun. 21 [cited 2025 Apr. 16];28(1):53-64. Available from: https://vjs.ac.vn/index.php/jcc/article/view/1065