Multi Response Optimization of NOx Emission of a Stationary Diesel Engine Fuelled with Crude Rice Bran Oil Methyl EsterS. Saravanan, G. Nagarajan and S. SampathOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 67 3 (2012) 491-501DOI: https://doi.org/10.2516/ogst/2011161