CHAN, L..
 Study of the Perturbation to a Bose-Einstein Gas.
<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 15, n. 1, july 2007.
ISSN 2012-0818.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/sciencediliman/article/view/138" target="_new">https://journals.upd.edu.ph/index.php/sciencediliman/article/view/138</a>&gt;. Date accessed: 03 aug. 2025.