ARNELID, Maria; HARRISON, Katherine; JOHNSON, Ericka. What Does It Mean to Measure a Smile? Assigning numerical values to emotions. Valuation Studies, [S. l.], v. 9, n. 1, p. 79–107, 2022. DOI: 10.3384/VS.2001-5992.2022.9.1.79-107. Disponível em: https://valuationstudies.liu.se/article/view/3586. Acesso em: 4 apr. 2025.