SIMEONOVA, G. On Certain Points of Discussion Regarding Relative Nullity Under Article 216 of the Tax and Social Insurance Procedure Code. Law Journal of New Bulgarian University, [S. l.], v. 21, n. 2, p. 38–45, 2025. DOI: 10.33919/ljnbu.25.2.3. Disponível em: https://ojs.nbu.bg/index.php/LJNBU/article/view/1430. Acesso em: 14 jul. 2026.