HOI, Dang Khanh.
 On the set of periods for periodic solusions of some linear differential equations on the multidimensional sphere Sn.
<strong>VNU Journal of Science: Mathematics - Physics</strong>, [S.l.], v. 25, n. 3, sep. 2009.
ISSN 2588-1124.
Available at: &lt;<a href="https://js.vnu.edu.vn/MaP/article/view/2647" target="_new">https://js.vnu.edu.vn/MaP/article/view/2647</a>&gt;. Date accessed: 22 nov. 2024.