J. González-Bueno, R. Tamošiūnienė, C. Gómez Morales, and G. Rueda-Barrios, “Applying the mean-variance framework: portfolio optimization and comparative performance analysis in the emerging Colombian capital market”, BMEE, vol. 23, no. 1, pp. 164–188, Jun. 2025, doi: 10.3846/bmee.2025.22695.