PILTNER, Reinhard.
 On the systematic construction of trial functions for hybrid Trefftz shell elements.
<strong>Computer Assisted Methods in Engineering and Science</strong>, [S.l.], v. 4, n. 3-4, p. 633-644, june 2023.
ISSN 2956-5839.
Available at: &lt;<a href="https://cames.ippt.gov.pl/index.php/cames/article/view/1395" target="_new">https://cames.ippt.gov.pl/index.php/cames/article/view/1395</a>&gt;. Date accessed: 23 dec. 2024.