SHACK Y., Nelson. How efficient is the map of UBNs as a tool for social expenditure’s focalization?. Apuntes. Social Sciences Journal, [S. l.], n. 45, p. 3–35, 1999. DOI: 10.21678/apuntes.45.485. Disponível em: https://revistas.up.edu.pe/apuntes/article/view/485. Acesso em: 10 sep. 2026.