Brzeziński, Artur. “Convergence of Titles to Insurance Social Security”. In The Use of Atypical Forms of Employment in Violation of Labour and Social Security Laws - Diagnosis and Prospects for the Future, edited by Tomasz Duraj, 265–280. Law. Poland: Lodz University Press, 2023. Accessed January 22, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/785/chapter/1881.