MONTERDE, Little Hermie B.; 						PARAS, Agnes T..
 On the Sum of Strictly <em>k</em>-zero Matrices.
<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 29, n. 1, june 2017.
ISSN 2012-0818.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/5637" target="_new">https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/5637</a>&gt;. Date accessed: 20 aug. 2025.