O. PIDDUBNIAK and N. PIDDUBNIAK, “Analysis of Spectral Characteristics of Sound Waves Scattered from a Cracked Cylindrical Elastic Shell Filled with a Viscous Fluid”, Arch. Acoust., vol. 38, no. 3, pp. 335–350, Sep. 2013, Accessed: Jun. 11, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/52