BRUNO, Alexander.
 On Some Geometric Methods in Mathematics and Mechanics.
<strong>Global Journal of Science Frontier Research</strong>, [S.l.], dec. 2017.
ISSN 2249-4626.
Available at: &lt;<a href="https://journalofscience.org/index.php/GJSFR/article/view/2128" target="_new">https://journalofscience.org/index.php/GJSFR/article/view/2128</a>&gt;. Date accessed: 25 may 2022.