Piekutowska, Agnieszka, and Jerzy Grabowiecki. “Migration and the Labour Market – The Case of Poland and the Baltic States”. Olsztyn Economic Journal 12, no. 3 (August 31, 2017): 247–260. Accessed July 5, 2022. https://czasopisma.uwm.edu.pl/index.php/oej/article/view/2809.