ISMAIL, Muhammad Iqbal Al-Banna; PIRDAUS, Dede Irman. Health Sector Portfolio Optimization Using the Markowitz Approach with Risk Aversion and Risk Tolerance Parameters. Operations Research: International Conference Series, [S. l.], v. 5, n. 4, p. 155–160, 2025. DOI: 10.47194/orics.v5i4.352. Disponível em: https://www.iorajournal.org/index.php/Orics/article/view/352. Acesso em: 14 jan. 2026.