The kafala institution in Spain and the constitution of International Child Adoption. Article 19.4 Of the Spanish act 54/2007. Cuad. derecho transnac. [Internet]. 2021 Sep. 14 [cited 2025 Dec. 5];13(2):778-83. Available from: https://e-revistas.uc3m.es/index.php/CDT/article/view/6293