LAI, Siyi. Consumer Preferences for New Product Upgrading Methods: Based on Regulatory Focus Theory. International Journal of Global Economics and Management, [S. l.], v. 7, n. 2, p. 166–175, 2025. DOI: 10.62051/ijgem.v7n2.17. Disponível em: https://ijgem.org/index.php/ojs/article/view/101. Acesso em: 13 jun. 2026.