D. Feldmann, John. “Thomas Piketty and the Natural Rights Argument for Equality”. Ética, economía y bienes comunes 21, no. 2 (March 5, 2025): 47–61. Accessed November 10, 2026. https://journal.upaep.mx/index.php/EthicsEconomicsandCommonGoods/article/view/406.