García-Díaz, I., F. Puertas, M. F. Gazulla, and M. Palacios. 2008. “Effect of ZnO, ZrO2 and B2O3 on Clinkerization Process. Part I. Clinkerization Reactions and Clinker Composition”. Materiales De Construcción 58 (292):81-99. https://doi.org/10.3989/mc.2008.45307.