Venegas Venegas, J. A. A.; Medina Cuéllar S. E.; Guevara Hernández F.; Castellanos Suárez J. A. Biogas: Current Situation, Generation Potential in Pig Farms and Environmental Benefits in Puebla. Remexca 2017, 8 (4), 1001-1005. https://doi.org/10.29312/remexca.v8i4.24.