KRAJEWSKI, Marcin. The concurrence of pension and disability insurance of the contractor selected issues. Acta Universitatis Lodziensis. Folia Iuridica, Poland, v. 88, p. 143–155, 2019. DOI: 10.18778/0208-6069.88.13. Disponível em: https://www.czasopisma.uni.lodz.pl/Iuridica/article/view/5803. Acesso em: 9 aug. 2026.