Pavlov, Ivan, Valery Tsaplev, Sergey Konovalov, and Roman Konovalov. “ON THE USAGE OF POROUS MATERIALS IN SOUND DAMPING. COMPACT SOUND DAMPERS AND EVALUATION OF THEIR EFFECTIVENESS”. Journal Akustika 39, no. 39 (June 1, 2021). Accessed December 4, 2024. https://journalakustika.com/index.php/akustika/article/view/43.