WINKLER–SKALNA, Agnieszka. “Propagation of Soundwaves in Uncertain Environment – New Interval Perturbation Methodology”. Archives of Acoustics 33, no. 4(S) (December 1, 2008): 171–176. Accessed April 26, 2025. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/854.