J. Ptaszny and P. Fedeliński, “Stress analysis of linear elastic structures by the fast multipole boundary element method”, Comp. Assist. Methods Eng. Sci., vol. 16, no. 3-4, pp. 223–240, Jan. 2017, Accessed: Jan. 18, 2026. [Online]. Available: https://cames.ippt.gov.pl/index.php/cames/article/view/147