Carvalho Sousa, Marcia Regina, Sandro Ribeiro Araújo da Silva, Joseane Maria de Souza e Souza, and José de Ribamar Sá Silva. “THE PROVISION OF BASIC SANITATION SERVICES: The Boundaries Between Public and Private”. Revista Aval 12, no. 26 (November 25, 2025). Accessed December 5, 2025. https://periodicos.ufc.br/aval/article/view/96286.