NGO, Tung Si.
 Small modules and Qf-Rings.
<strong>VNU Journal of Science: Mathematics - Physics</strong>, [S.l.], v. 20, n. 2, apr. 2017.
ISSN 2588-1124.
Available at: &lt;<a href="https://js.vnu.edu.vn/MaP/article/view/4126" target="_new">https://js.vnu.edu.vn/MaP/article/view/4126</a>&gt;. Date accessed: 17 may 2024.