Fraga, J. L., J. María del Campo, J. Ángel García, and F. Escolano. “Comparative Study on High-Strength Structural Elements and CNT Additions”. Revista De La Construcción. Journal of Construction, vol. 15, no. 2, Aug. 2016, pp. 88-97, http://146.155.94.136/index.php/RDLC/article/view/12856.