Brański, A. “Acoustic Modelling of Surface Sources. Part I. Piston Model, Discretizing Error, Axisymmetrical Problem”. Archives of Acoustics 20, no. 4 (January 1, 2014): 311–326. Accessed January 13, 2025. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1273.