ANTONY, J. Willingness to Pay for Access to Improved and Reliable Piped Water: A Contingent Valuation Study in Kerala, India. Thailand Statistician, [S. l.], v. 17, n. 1, p. 75–83, 2018. Disponível em: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/163198. Acesso em: 3 may. 2024.