IMPROVEMENT OF ACOUSTIC FEATURES OF CATALYTIC MUFFLERS. Journal Akustika, [S. l.], v. 39, n. 39, 2025. DOI: 10.36336/kehcrv41. Disponível em: https://journalakustika.com/index.php/akustika/article/view/29. Acesso em: 12 mar. 2025.