Enhancing Sustainable Investment Decision-Making: A Case Study of Green ETFs and Bonds Using the Markowitz. Journal of Informatics Education and Research, [S. l.], v. 5, n. 1, 2025. DOI: 10.52783/jier.v5i1.2167. Disponível em: https://www.jier.org/index.php/journal/article/view/2167. Acesso em: 21 apr. 2026.