“Operational Parameters Influence on Resulted Noise of Multi-Cylinders Engine Runs on Dual Fuels Mode” (2021) Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), 35(1), pp. 186–204. doi:10.55562/jrucs.v35i1.269.