Gutierrez Betancur, J. C.; Gutiérrez Díaz, A. K.; Gómez Fernández, A. Robust Estimation of Beta and the Hedging Ratio in Stock Index Futures In the Integrated Latin American Market. ecos.econ. 2017, 21 (44), 37-71. https://doi.org/10.17230/ecos.2017.44.2.