BULATOV, A.; BERTULIS, A. Spatial Filtering and Distortions of Visual Image. Elektronika ir Elektrotechnika, [S. l.], v. 14, n. 1, 1998. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/15937. Acesso em: 14 apr. 2025.