LUGÓN CERUTI, Alejandro. Altruism and Reciprocity in the Long-Run. Economia, [S. l.], v. 41, n. 82, p. 157–188, 2018. DOI: 10.18800/economia.201802.006. Disponível em: https://revistas.pucp.edu.pe/index.php/economia/article/view/20913. Acesso em: 28 dec. 2025.