“Pojęcie Zmiany treści Umownego Stosunku Pracy: [The Concept of a Change in the Content of the Contractual Employment Relationship]”. Studia Prawnicze / The Legal Studies, no. 2 (52) (April 30, 2023): 101–146. Accessed October 6, 2025. https://czasopisma.inp.pan.pl/index.php/sp/article/view/3038.