Augustyniak, Arleta. “My Recollections about Professor Tadeusz Cielecki (17 March 1941 - 27 November 2020)”. The Opole Studies in Administration and Law 19, no. 3 (August 4, 2021). Accessed December 27, 2024. https://czasopisma.uni.opole.pl/index.php/osap/article/view/4482.