Solórzano, C., D. Zambrano, H. Vacca, and J. Larrahondo. “Resilient-Modulus Degradation of Low-Plasticity Clays Due to Coal Combustion Residuals”. Revista Ingeniería De Construcción, vol. 34, no. 3, June 2020, pp. 225-41, doi:10.4067/S0718-50732019000300225.