Material and Immaterial Walls in Contemporary International Law: consequences on human rights, fundamental freedoms, security and the environment. An Introduction to the Forum. Spanish Yearbook of International Law, [S. l.], v. 23, 2019. DOI: 10.17103/sybil.23.21. Disponível em: https://www.sybil.es/sybil/article/view/265. Acesso em: 6 jul. 2026.