BYRUM, C. Stephen. Counterfactual Emotions and "Undoing": The Kahneman/Hartman Discussion. Journal of Formal Axiology: Theory and Practice, [S. l.], v. 10, p. 43–52, 2017. DOI: 10.67945/jfa.v10i.153. Disponível em: https://journal.hartmaninstitute.org/index.php/jfa/article/view/153. Acesso em: 12 nov. 2026.