A hybrid IFR-IDY conjugate gradient algorithm for unconstrained optimization and its application in portfolio selection. Journal of the Nigerian Society of Physical Sciences, [S. l.], v. 8, n. 1, p. 3105, 2026. DOI: 10.46481/jnsps.2026.3105. Disponível em: https://journal.nsps.org.ng/index.php/jnsps/article/view/3105. Acesso em: 29 apr. 2026.