M. Flores-Ortega, L. A. Flores Castillo, and A. Paredes Gómez, “Selection of Investment Portfolios Including the Effect of Asymmetry: Evidence from Assets of the Mexican Stock Exchange”, PE, vol. 10, no. 19, pp. 77–95, Jul. 2014, doi: 10.29201/peipn.v10i19.343.