Simões, M. C. N., M. A. P. S. Duarte, and J. A. S. Andrade. “Recent Trends in Employees’ Earnings Inequality in Portugal. A Quantitative Analysis Between 1986 and 2017”. Panoeconomicus, vol. 67, no. 3, June 2020, pp. 333-60, doi:10.2298/PAN2003333S.