An Urban Informal Economy: Livelihood Opportunity to Poor or Challenges for Urban Governance. Global Journal of Human-Social Science, [S. l.], v. 11, n. 2, p. 25–32, 2011. Disponível em: https://socialscienceresearch.org/index.php/GJHSS/article/view/82. Acesso em: 20 feb. 2026.