Ramirez-Jaramillo, M. T., and E. S. Fraga. “Comparative Modelling and Optimization of Different Pretreatment Technologies for Bioethanol Production”. Centro Azúcar Journal, vol. 38, no. 1, Jan. 2011, http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/359.