ALAMIREW, L. A. Alternative Method To Check Ambiguity In Context Free Grammars. Journal of Engineering and Technology (JET), [S. l.], v. 8, n. 2, p. 71–80, 2017. Disponível em: https://jet.utem.edu.my/jet/article/view/1479. Acesso em: 29 apr. 2024.