HELLER, Janusz. Investments as an instrument of regional policy. The Scientific Journal European Policies, Finance and Marketing, [S. l.], n. 1(50), p. 103–118, 2009. DOI: 10.22630/PEFIM.2009.1.50.8. Disponível em: https://pefim.sggw.edu.pl/article/view/1627. Acesso em: 10 nov. 2026.