T. G. ZIELIŃSKI, M. POTOCZEK, R. E. ŚLIWA, and Łukasz J. NOWAK, “Acoustic Absorption of a New Class of Alumina Foams with Various High-Porosity Levels”, Arch. Acoust., vol. 38, no. 4, pp. 495–502, Dec. 2013, Accessed: Apr. 29, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/313