FORDOŃSKI, Arkadiusz and GUZIŃSKI, Bogdan. Economic Immigration as a Challenge for Local and Regional Authorities: The Case of Olefins III – the PKN Orlen Investment. Historia i Polityka. Online. 18 November 2025. No. 54 (61), pp. 71-88. [Accessed 12 December 2025]. DOI 10.12775/HiP.2025.031.