Nakai, Takayoshi. “Simulation of Normal Incidence Sound Absorption Coefficients of Perforated Panels With/Without Glass Wool by Transmission Line Parameters in a Two-Port Network”. Rajshahi University Journal of Science and Engineering 44 (November 19, 2016): 123–130. Accessed June 25, 2022. https://banglajol.info/index.php/RUJSE/article/view/30397.