EXPERIMENTAL INVESTIGATION ON 4-S CI ENGINE USING PUMPKIN SEED BIO-DIESEL AS AN ALTERNATIVE FUEL BY VARYING THE INJECTION TIMING. International Journal of Food and Nutritional Sciences, [S. l.], v. 11, n. 12, p. 9774–9778, 2022. Disponível em: http://www.ijfans.org/index.php/Journal/article/view/13844. Acesso em: 25 aug. 2026.