THANG, Cao Xuan et al.
 Effect of Fuel Contents on Upconversion Emission Properties of Rare-Earth Ions Doped Hydroxyapatite/Tri-Calcium Composite Phosphors.
<strong>VNU Journal of Science: Mathematics - Physics</strong>, [S.l.], oct. 2026.
ISSN 2588-1124.
Available at: &lt;<a href="https://js.vnu.edu.vn/MaP/article/view/5174" target="_new">https://js.vnu.edu.vn/MaP/article/view/5174</a>&gt;. Date accessed: 16 oct. 2026.
doi: <a href="https://doi.org/10.25073/2588-1124/vnumap.5174">https://doi.org/10.25073/2588-1124/vnumap.5174</a>.