فهرس المقالات seyyd kazem yekani المقاله 1 - Experimental Study and Comparison of a Few Lean (gasoline-natural gas) Dual Fuels Based on Safe Optimum Spark Advance 10.30495/ijim.2022.19651 S. K. Yekani E. Abdi ‎Aghdam‎ M. Sarabi International Journal of Industrial Mathematics , العدد 4 , السنة 14 , تابستان 2022