Klekiel, Tomasz, and Jan A. Kołodziej. “Trefftz Method for Large Deflection of Plates With Application of Evolutionary Algorithms”. Computer Assisted Methods in Engineering and Science, vol. 13, no. 3, Nov. 2022, pp. 407-16, https://cames3.ippt.pan.pl/index.php/cames/article/view/942.