ŁAPKA, Wojciech. Numerical and Experimental Analysis of Tuning Three Selected Types of Acoustic Helicoidal Resonators with 90-Degree Duct Elbow. Engineering Transactions, [S. l.], 2025. DOI: 10.24423/engtrans.3377.2025. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/3377. Acesso em: 5 dec. 2025.