S. Martínez-Ramírez and M. T. Blanco-Varela, “Thermodinamically stable phases in the CaO-SiO2-Al2O3-CaSO4-H2O closed system at 25 ºC. Application to cementitious systems”, Mater. constr., vol. 59, no. 294, pp. 31–39, Jun. 2009.