VAN TRONG, Dang et al.
 Study on Optical Features of Circular Photonic  Crystal Fibers with Various Air-hole Size.
<strong>VNU Journal of Science: Mathematics - Physics</strong>, [S.l.], v. 38, n. 4, dec. 2022.
ISSN 2588-1124.
Available at: &lt;<a href="https://js.vnu.edu.vn/MaP/article/view/4728" target="_new">https://js.vnu.edu.vn/MaP/article/view/4728</a>&gt;. Date accessed: 22 dec. 2024.
doi: <a href="https://doi.org/10.25073/2588-1124/vnumap.4728">https://doi.org/10.25073/2588-1124/vnumap.4728</a>.