abdelkader, khamchane, Youcef Khelfaoui, and Brahim Hamtache. 2021. “Shape Optimization Of Extended Tube Muffler Using Threshold Acceptance, Simulated Annealing And FEM Methods”. Canadian Acoustics 49 (2). https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3384.