GRZEŚKOWIAK, A. The Level of Hard Competencies and the Amount of Earnings – Evaluation by Selected Nonparametric Methods. Acta Universitatis Lodziensis. Folia Oeconomica, [S. l.], v. 5, n. 338, p. 143–156, 2018. DOI: 10.18778/0208-6018.338.09. Disponível em: https://czasopisma.uni.lodz.pl/foe/article/view/2805. Acesso em: 7 may. 2024.