DHELIKA, Radon; 						NIRBITO, Wahyu; 						KARIS, Anantama.
 Analysis of Changes in First Mode Natural Frequency of Palm Trees Caused by Geometrical and Morphological Aspects.
<strong>International Journal of Environmental Research &amp; Clean Energy</strong>, [S.l.], v. 11, n. 1, p. 1-6, oct. 2018.
ISSN 2502-3888.
Available at: &lt;<a href="https://isomase.org/Journals/index.php/ijerce/article/view/16" target="_new">https://isomase.org/Journals/index.php/ijerce/article/view/16</a>&gt;. Date accessed: 29 apr. 2026.