Quiñones Domínguez, M., and J. A. Rodríguez Sinisterra. “Educational Returns in the Colombian Regions: An Analysis Using the Oaxaca-Blinder Decomposition”. Sociedad Y Economía, vol. 1, no. 20, Jan. 2011, pp. 37-68, doi:10.25100/sye.v0i20.4059.