List of Articles Natural gas Open Access Article Abstract Page Full-Text 1 - Experimental Study and Comparison of a Few Lean (gasoline-natural gas) Dual Fuels Based on Safe Optimum Spark Advance سیدکاظم یکانی ابراهیم عبدی اقدم مهرداد سرابی 10.30495/ijim.2022.19651 Open Access Article Abstract Page Full-Text 2 - An Experimental Analysis of the Knock Response of Different Stoichiometric Mixtures of Gasoline-Natural Gas to Various Engine Speeds رضا بهراد ابراهیم عبدی اقدم هادی غائبی 10.30495/ijim.2023.20734