RADOSZ, Jan. “Sound Insulation of an Acoustic Barrier With Layered Structures of Sonic Crystals – Comparative Studies of Physical and Theoretical Models”. Archives of Acoustics 49, no. 4 (December 31, 2024): 591–599. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/3567.