Armengol, Joel, and Mercè Segarra. “ENERGY STUDY OF THE USE OF ELECTRONIC TICKETS”. Centro Azúcar Journal 46, no. 5 (December 17, 2019): 1–6. Accessed August 2, 2025. http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/173.