PHUNG, Bao Quoc.
 A black-box model of optical  amplifier chains in optical fibre telecommunications systems.
<strong>VNU Journal of Science: Mathematics - Physics</strong>, [S.l.], v. 19, n. 3, apr. 2017.
ISSN 2588-1124.
Available at: &lt;<a href="https://js.vnu.edu.vn/MaP/article/view/4093" target="_new">https://js.vnu.edu.vn/MaP/article/view/4093</a>&gt;. Date accessed: 16 jan. 2025.