G Lakshmi Narayana Rao and  S Sampath and  K Rajagopal,  Experimental Studies on the Combustion and Emission Characteristics of a Diesel Engine Fuelled with Used Cooking Oil Methyl Esterand its Diesel Blends.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2008, vol. 13(1). 90 - 96
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/5611.