Forced labour, servitude and slavery in Europe according to the productive sectors: critical analysis of the scope of the case law of article 4 of the European Convention on Human Rights. UNIVERSITAS [Internet]. 2017 Jan. 17 [cited 2025 Dec. 5];(25):90-138. Available from: https://e-revistas.uc3m.es/index.php/UNIV/article/view/3558