Khudhair, Muna Mahmood, Sajeda Abbas Husain, Shafaa Mahdi Salih, and Zahraa Mahmed Jassim. 2017. “Preparation of Cetane Improver for Diesel Fuel and Study It’s Performance”. Al-Nahrain Journal of Science 20 (1): 42-50. https://anjs.edu.iq/index.php/anjs/article/view/40.