Sutheerasak, Ekkachai, Ruengphrathuengsuka, Wirogana, AND Chuepeng, Sathaporn. " Investigation of PEE5 Blended with n-Butanol and Ethanol on Performance and Pollutants of a Direct Injection Diesel Engine" Naresuan University Journal: Science and Technology (NUJST) [Online], Volume 30 Number 1 (28 May 2021)