WALCZAK, Damian. Social security in agriculture in 2009 and 2019 – quantitative changes. Ubezpieczenia w Rolnictwie – Materiały i Studia, [S. l.], n. 1/75, p. 23–38, 2021. Disponível em: https://ojs.academicon.pl/ur/article/view/10093. Acesso em: 6 wrz. 2025.