Poll-Legrá, L., Almenares-Reyes, R.S., Romero-Ramírez, Y., Alujas-Díaz, A., Leyva-Rodríguez, C.A. and Martirena-Hernández, J.F. 2016. Assessment on the puzzolanic activity of clayey materials in La Delta deposit. Minería & Geología. 32, 1 (Mar. 2016), 15–27.