Villachica, C., and J. Villachica. “TECHNOLOY DEVELOPMENT FOR STRONG REDUCTION OF ENERGY CONSUMPTION AND CO2 EMISSION IN LIME AND CEMENT MANUFACTURE”. GeoScience Engineering, vol. 63, no. 3, Oct. 2017, pp. 1-7, http://geoscience.cz/ojs/index.php/GSE/article/view/153.