SIMEONOV, Dimitar. Regional Economic Analysis - Economic-Geographical Aspects. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 62, n. 1, p. 96–106, 2022. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/13864. Acesso em: 23 oct. 2025.