MAZURKIEWICZ, Maciej Jan. The state of research on the history of social insurance law with in the Second Polish Republic (1918–1939). Studia Iuridica Toruniensia. Online. 26 February 2016. Vol. 17, pp. 145-162. [Accessed 28 January 2026]. DOI 10.12775/SIT.2015.022.