DUY THIEN, Nguyen et al.
 Fabrication, Characterization of SiO2 Nanospheres  and SiO2 Opal Photonic Crystals.
<strong>VNU Journal of Science: Mathematics - Physics</strong>, [S.l.], v. 37, n. 1, mar. 2021.
ISSN 2588-1124.
Available at: &lt;<a href="https://js.vnu.edu.vn/MaP/article/view/4510" target="_new">https://js.vnu.edu.vn/MaP/article/view/4510</a>&gt;. Date accessed: 24 nov. 2024.
doi: <a href="https://doi.org/10.25073/2588-1124/vnumap.4510">https://doi.org/10.25073/2588-1124/vnumap.4510</a>.