Lyra Corrêa, C., N. Fritz, A. . Firmo, and J. F. . Jucá. “Biogas Production from the Degradation of Biodiesel Agroindustry Waste”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 63, no. 1, Jan. 2020, pp. 59-71, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/5461.