Examining Households’ Willingness to Pay for a Reliable and Sustainable Urban Water Supply using Interval Regression Analysis: The case of Addis Ababa. Ethiopian Journal of Economics, [S. l.], v. 28, n. 1, p. 49–98, 2020. Disponível em: https://ethiopianjournalofeconomics.org/index.php/EJE/article/view/206.. Acesso em: 17 jun. 2026.