LÓPEZ-HERRERA, Francisco; SANTILLÁN-SALGADO, Roberto J.; ORTIZ, Edgar. Interdependence of NAFTA Capital Markets: A Minimum Variance Portfolio Approach. Panoeconomicus, [S. l.], v. 61, n. 6, p. 691–707, 2014. DOI: 10.2298/PAN1406691L. Disponível em: http://panoeconomicus.org/index.php/jorunal/article/view/490. Acesso em: 5 dec. 2025.