BUSSAMRA, Flávio L.S.; PIMENTA, Paulo de Mattos; TEIXEIRA DE FREITAS, João A. Hybrid-Trefftz stress elements for three-dimensional elastoplasticity. Computer Assisted Methods in Engineering and Science, [S. l.], v. 8, n. 2-3, p. 235–246, 2023. Disponível em: https://cames3.ippt.pan.pl/index.php/cames/article/view/1167. Acesso em: 12 jan. 2025.