Talero-Sarmiento, L. H., Lamos-Díaz, H. and Garavito-Hernández, E. A. (2019) “Testing the Weak Form of Efficient Market Hypothesis and Causality Analysis in Colombian Food Supply Centers”, Apuntes del Cenes, 38(67), pp. 35–69. doi: 10.19053/01203053.v38.n67.2019.8040.