Professor Jan Kolasa (1926-2016). Polish Yearbook of International Law, [S. l.], v. 36, p. 11–18, 2017. DOI: 10.7420/pyil2016a. Disponível em: https://czasopisma.inp.pan.pl/index.php/pyil/article/view/2524. Acesso em: 3 oct. 2025.