Numerical computation of cut off wave number in polygonal wave guide by eight node finite element mesh generation approach. Journal of the Nigerian Society of Physical Sciences, [S. l.], v. 6, n. 4, p. 2149, 2024. DOI: 10.46481/jnsps.2024.2149. Disponível em: https://journal.nsps.org.ng/index.php/jnsps/article/view/2149.. Acesso em: 19 nov. 2024.