BARILE, L.; CULLIS, J.; JONES, P. Time Preference for Investment in the Environment: The Impact of Intrinsic Motivation. Economic Issues, [S. l.], v. 23, n. 2, p. 31–56, 2018. Disponível em: https://economicissues.org.uk/index.php/EI_OJS/article/view/307. Acesso em: 15 oct. 2026.