[1]
J. SKRZYPCZYK, “Perturbation Methods for Acoustic Systems with Interval Parameters”, Arch. Acoust., vol. 33, no. 4(S), pp. 165–170, Jan. 2008, Accessed: Apr. 18, 2026. [Online]. Available: http://acoustics.ippt.gov.pl/index.php/aa/article/view/853