Social security in flexible forms of employment on the example of Poland - selected problems. Eastern European Journal of Transnational Relations, Bialystok, PL, v. 7, n. 3, p. 61–71, 2024. DOI: 10.15290/eejtr.2023.07.03.05. Disponível em: https://eejtr.uwb.edu.pl/article/view/837.. Acesso em: 18 may. 2024.