1.
PIĄTKOWSKI, Jan and RUTKOWSKA, Beata. Expansion of collective labour law into non-employee employment relationships. Studia Iuridica Toruniensia. Online. 18 March 2024. Vol. 33, no. 2, pp. 261-280. [Accessed 18 January 2025]. DOI 10.12775/SIT.2023.030.