J. F. Liow, H. Chan, C. T. Chong, and J.-H. Ng. 2022. “Effects of European Union Enlargement on the Viability of Hydroprocessed Esters and Fatty Acids Production Usage in Diesel Engines”. Journal of the Society of Automotive Engineers Malaysia 6 (1). Kuala Lumpur, Malaysia:5-11. https://jsaem.my/index.php/journal/article/view/206.