Ferrarez, Adriano Henrique, et al. “Potential for Mitigation of Emissions of Greenhouse Gases and Framework in Clean Development Mechanism (CDM) With the Use of Biogas As Energy Source in the Broiler Production Chain”. Revista Vértices, vol. 12, no. 3, Dec. 2010, pp. 41-58, https://doi.org/10.5935/1809-2667.20100020.