J. R. Ahcar Olmos, L. P. Sierra Suárez, and J. T. Peláez Soto, “How did the global economic crisis affect the building sector in Colombia? An analysis of the contagion channels”., PE, vol. 7, no. 13, pp. 53–74, Jul. 2011, doi: 10.29201/peipn.v7i13.305.