S. KASSIM, Muna; K. AL-DOORY, Muthana; SABAH M. AL-AMEEN, Ehsan. Experimental Investigation for The Effect of Inlet & Outlet Pipe Lengths on Noise Attenuation in a Muffler. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 16, n. 2, p. 1–15, 2012. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1192.. Acesso em: 4 jun. 2026.