HAOLIN XU, Harry. Informal Sector and Real GDP Per-Capita. BCP Business & Management, [S. l.], v. 25, p. 357–362, 2022. DOI: 10.54691/bcpbm.v25i.1843. Disponível em: https://bcpublication.org/index.php/BM/article/view/1843. Acesso em: 4 sep. 2026.