KHADIM, Umair; 						IQBAL, Muhammad Munwar; 						AZAM, Muhammad Awais.
 A Secure Digital Text Watermarking Algorithm for Portable Document Format (PDF).
<strong>Mehran University Research Journal of Engineering and Technology</strong>, [S.l.], v. 41, n. 1, p. 100-110, jan. 2022.
ISSN 2413-7219.
Available at: &lt;<a href="https://publications.muet.edu.pk/index.php/muetrj/article/view/2358" target="_new">https://publications.muet.edu.pk/index.php/muetrj/article/view/2358</a>&gt;. Date accessed: 06 feb. 2025.
doi: <a href="http://dx.doi.org/10.22581/muet1982.2201.10">http://dx.doi.org/10.22581/muet1982.2201.10</a>.