ZIENKIEWICZ, Olgierd C.. Trefftz type approximation and the generalized finite element method - history and development. Computer Assisted Methods in Engineering and Science, [S.l.], v. 4, n. 3-4, p. 305-316, june 2023. ISSN 2956-5839. Available at: <https://cames.ippt.pan.pl/index.php/cames/article/view/1374>. Date accessed: 22 nov. 2024.