CIŻKOWICZ, Piotr; ŁASZEK, Aleksander; RZOŃCA, Andrzej. How big are labour productivity disparities in Poland. Financial Law Review, [S. l.], n. 20(4), p. 1–21, 2020. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/flr/article/view/5425. Acesso em: 18 may. 2024.