“An Experimental Investigation of Using Ethanol As Additive to Coconut Oil on the Performance and Emission Characteristics of a Diesel Engine at Different Loads ”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695 IJERAT, vol. 2, no. 1, May 2016, pp. 194-01, https://ijerat.com/index.php/ijerat/article/view/267.