Delgado Vélez, Luis David, and María Patricia Durango Gutiérrez. “Structuring of an Investment Portfolio With Colombian Shares”. Semestre Económico 21, no. 46 (May 27, 2016): 167–183. Accessed April 18, 2026. https://revistas.udem.edu.co/index.php/economico/article/view/2663.