Abdallah F. Abd El-Mohsen and  Ahmed A. Abdelsamee and  Nouby M. Ghazaly,  Experimental Study of Exhaust Muffler System for Direct-Injection Gasoline Engine.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2019, vol. 155(11). 722 - 727
    [viewed 19 January 2020]. Available from: https://publications.waset.org/pdf/10010918.