Atencio, P. and Albernas Carvajal, Y. (2011) “Energetic save from residential area through biogas production, as application of active and passive sun techniques”, Centro Azúcar Journal, 38(4). Available at: http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/392 (Accessed: 10April2025).