San Anastacio Rebollar, I. M., J. P. Robert Mullin, D. Clevland Anderson, R. Feyt Leiva, and G. Villanueva Ramos. “Analysis of Alternatives for the Obtaining of Matter Insaponificable Starting from Residual of the Sugar Industry”. Centro Azúcar Journal, vol. 39, no. 1, Jan. 2012, http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/325.