RÁCZ, Z. Invalidity, ineffectiveness, and non-existent legal ransactions in labour law. European Integration Studies, [S. l.], v. 18, n. 2, p. 42–47, 2023. DOI: 10.46941/2022.e2.42-47. Disponível em: https://ojs.uni-miskolc.hu/index.php/eis/article/view/2260. Acesso em: 3 jul. 2024.