Badrulhisam NH, Nessiem Ehab Frere, Ismail MY, Abdullah AA, W Sawangsri. Effect of B30 Palm Oil Methyl Ester Biodiesel with Isobutanol Fuel Additive on Engine Performance of a Diesel Engine. IJIE [Internet]. 2024 Sep. 19 [cited 2026 Apr. 7];16(2):363-72. Available from: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/17404