BERNARDO, Neil Irwin M.; 						DE LEON, Franz.
 Low-Complexity Physical Layer Security Scheme for Heterogeneous Cellular Networks based on Coordinated Precoding Design and Artificial Noise Generation.
<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 30, n. 1, apr. 2018.
ISSN 2012-0818.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/sciencediliman/article/view/6098" target="_new">https://journals.upd.edu.ph/index.php/sciencediliman/article/view/6098</a>&gt;. Date accessed: 06 sep. 2025.