Solano-Benavides, E., and N. Alandete-Brochero. “Causality and Volatility in the Colcap Index of the Colombian Stock Exchange As a Result of Covid-19 Infections and Deaths”. Ingeniería Y Competitividad, vol. 26, no. 1, Feb. 2024, p. e-20412930, doi:10.25100/iyc.v26i1.12930.