Korczak, Jerzy, Piotr Lisowski, and Ewa Pierzchała. “Preface”. The Opole Studies in Administration and Law 16, no. 1 (1) (October 18, 2019): 7–10. Accessed November 2, 2024. https://czasopisma.uni.opole.pl/index.php/osap/article/view/1349.