[1]
Skóra, K., Strzyż, P. and Szymczak, J. 2022. Bull of Antipope John XXIII found in Mierzyn, Central Poland. Fasciculi Archaeologiae Historicae. 35, (Dec. 2022), 131–145. DOI:https://doi.org/10.23858/FAH35.2022.009.