abdelkader, khamchane, Y. Khelfaoui, and B. Hamtache. “Shape Optimization Of Extended Tube Muffler Using Threshold Acceptance, Simulated Annealing And FEM Methods”. Canadian Acoustics, vol. 49, no. 2, July 2021, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3384.