SKÓRA, K.; STRZYŻ, P.; SZYMCZAK, J. Bull of Antipope John XXIII found in Mierzyn, Central Poland. Fasciculi Archaeologiae Historicae, [S. l.], v. 35, p. 131–145, 2022. DOI: 10.23858/FAH35.2022.009. Disponível em: https://journals.iaepan.pl/fah/article/view/3311. Acesso em: 13 jul. 2024.