State and Prospects of Investment in Poltava region. Economics and region, [S. l.], n. 4 (65), p. 40–44, 2017. DOI: 10.26906/EiR.2017.4 (65).891. Disponível em: https://ojs35.nupp.edu.ua/eir/article/view/891. Acesso em: 23 dec. 2025.