H. S. Restrepo and J. M. Louçã,  "Topological properties of inequality and deprivation in an educational system: Unveiling the key-drivers through complex network analysis", in Human systems engineering and design II. Advances in Intelligent Systems and Computing , Ahram, T., Karwowski, W., Pickl, S., and Taiar, R., Ed., Munich, Springer International Publishing, 2019, vol. 1026, pp. 469-475