GA, B. V.; TU, B. T. M. Soot Emission Analysis in Combustion of Biogas Diesel Dual Fuel Engine. International Journal of Environmental Science & Sustainable Development, [S. l.], v. 2, n. 1, p. 67–79, 2017. DOI: 10.21625/essd.v2i1.55. Disponível em: https://press.ierek.com/index.php/ESSD/article/view/55. Acesso em: 7 feb. 2023.