Percentage Analysis Mixed of CPO, Phosphic Acid and Sodium Hydroxide as a Replacement for Diesel Engine Oil Fuel Using a Calorize Test. International Journal of Engineering and Computer Science, india, v. 9, n. 09, p. 25189–25198, 2020. DOI: 10.18535/ijecs/v9i09.4529. Disponível em: http://ijecs.in/index.php/ijecs/article/view/4529. Acesso em: 11 apr. 2025.