Pérez Castellanos, E., R. Hernández Ortega, and A. Espinosa Acevedo. “Diagnostic of the Systems of Transportation of Solids in Sugar Factories of Villa Clara”. Centro Azúcar Journal, vol. 38, no. 3, Sept. 2011, http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/376.