SAMOSIR, R. S. Filtering and Wavelet Transform Algorithm for Old Document Image Restoration. ComTech: Computer, Mathematics and Engineering Applications, [S. l.], v. 8, n. 3, p. 177-181, 2017. DOI: 10.21512/comtech.v8i3.3995. Disponível em: https://journal.binus.ac.id/index.php/comtech/article/view/3995. Acesso em: 29 mar. 2025.