Chukwudi Okwuchukwu, Aniagor. “ENGINE PERFORMANCE ANALYSIS OF PALM KERNEL OIL-BASED BIODIESEL BLENDS ON SPEED VARIATIONS OF A 4-CYLINDER ENGINE AT CONSTANT TORQUE”. Journal of Advance Research in Mechanical and Civil Engineering (ISSN: 2208-2379) 9, no. 4 (April 10, 2023): 6–11. Accessed September 12, 2025. https://textitlejournal.com/nnpub.org/index.php/MCE/article/view/1640.