LIM, May; 						SALOMA, Caesar.
 Scientific Publications by the Faculty of the College of Science, UP Diliman: September 1988 to May 1998.
<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 10, n. 1, sep. 2007.
ISSN 2012-0818.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/sciencediliman/article/view/255" target="_new">https://journals.upd.edu.ph/index.php/sciencediliman/article/view/255</a>&gt;. Date accessed: 05 aug. 2025.