Ferens, Ewa. “WAGE CONVERGENCE ON THE COUNTY-LEVEL IN POLAND: A PANEL DATA APPROACH”. Acta Scientiarum Polonorum. Oeconomia 17, no. 4 (December 30, 2018): 51-58. Accessed May 6, 2024. https://js.wne.sggw.pl/index.php/aspe/article/view/4374.