Advisory Opinions under Protocol No. 16 to the ECHR. A Theoretical and Empirical Analysis of the Legal Nature of the ‘Questions of Principle’. Frontiers in Law, [S. l.], v. 4, p. 18–28, 2026. DOI: 10.6000/2817-2302.2025.04.03. Disponível em: https://neolifescience.com/index.php/FIA/article/view/10388. Acesso em: 15 jan. 2026.