Psychological Determinants of Investment Decisions: An Integrated Sierpinski Triangle Fuzzy-based Decision-Making Model for Enhancing Financial Well-Being. Journal of Expert Systems and Sustainable Development, [S. l.], v. 2, n. 1, p. 169–190, 2026. DOI: 10.65069/jessd21202620. Disponível em: https://essd-journal.org/index.php/essd/article/view/20. Acesso em: 28 aug. 2026.