Talero-Sarmiento, Leonardo Hernán, Henry Lamos-Díaz, and Edwin Alberto Garavito-Hernández. 2019. “Testing the Weak Form of Efficient Market Hypothesis and Causality Analysis in Colombian Food Supply Centers”. Apuntes Del Cenes 38 (67):35-69. https://doi.org/10.19053/01203053.v38.n67.2019.8040.