Yadav, B., S. Soni, D. Sharma, and P. Sharma. “PERFORMANCE AND EMISSION ANALYSIS OF CONSTANT SPEED SI ENGINE OPERATED ON HYTHANE (HCNG)”. MATTER: International Journal of Science and Technology, vol. 3, no. 2, Sept. 2017, pp. 64-79, doi:10.20319/mijst.2017.32.6479.