Ihlenburg F. Error estimation for FEM in acoustic scattering: Dedicated to the memory of Prof. dr. habil. inż. Marian Kmiecik. Comp. Assist. Methods Eng. Sci. [Internet]. 1996 Dec. 31 [cited 2026 Mar. 5];3(4):389-401. Available from: https://cames.ippt.gov.pl/index.php/cames/article/view/1438