Robert Kolb, Peremptory International Law – Jus Cogens: A General Inventory, Hart Publishing, Oxford/Portland: 2015, pp. xvii + 137. Polish Yearbook of International Law, [S. l.], v. 36, p. 287–290, 2016. DOI: 10.7420/pyil2016q. Disponível em: https://czasopisma.inp.pan.pl/index.php/pyil/article/view/2620. Acesso em: 4 oct. 2025.