L. Murzinov, v, et al. “Mathematical Modeling of Sound Insulation for Sound Suppressing Lightweight Structured Panels (SSLWSP)”.
International Journal of Engineering and Technology, vol. 7, no. 2.13, Apr. 2018, pp. 109-13,
https://doi.org/10.14419/ijet.v7i2.13.11621.