ANCKAR, D. Rigidity Measures. On Constitutional Amendment. Advances in Social Sciences Research Journal, [S. l.], v. 4, n. 14, 2017. DOI: 10.14738/assrj.414.3419. Disponível em: https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/3419. Acesso em: 26 apr. 2024.