KIZI, D. M. R. . Basic Concepts of the Theory of Lacuna, Classifications of Gaps. European Multidisciplinary Journal of Modern Science, [S. l.], v. 6, p. 88–94, 2022. Disponível em: https://emjms.academicjournal.io/index.php/emjms/article/view/351. Acesso em: 22 jul. 2024.