M. . S. Kassim, M. . K. Al-Doory, and E. . Sabah M. Al-Ameen, “Experimental Investigation for The Effect of Inlet & Outlet Pipe Lengths on Noise Attenuation in a Muffler”, J. eng. sustain. dev., vol. 16, no. 2, pp. 1–15, Jun. 2012, Accessed: Jun. 04, 2026. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1192