Saltovskyi, Oleksandr, and Nataliia Saltovska. 2020. “Stanislaw Orzechowski Roxolan and Ukrainian-Polish Contribution to the Development of Political Theory of Late Medieval Europe”. European Journal of Transformation Studies 8 (1):126-34. https://czasopisma.bg.ug.edu.pl/index.php/journal-transformation/article/view/5001.